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13630138069 = 29470004761
BaseRepresentation
bin11001011000110101…
…10110011011010101
31022011220111202101111
430230122312123111
5210403303404234
610132301055021
7661524155602
oct145432663325
938156452344
1013630138069
115864948519
122784857471
131392ac0372
149343196a9
1554b924664
hex32c6b66d5

13630138069 has 4 divisors (see below), whose sum is σ = 14100142860. Its totient is φ = 13160133280.

The previous prime is 13630138057. The next prime is 13630138087. The reversal of 13630138069 is 96083103631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96083103631 = 122443784717.

It can be written as a sum of positive squares in 2 ways, for example, as 7046763025 + 6583375044 = 83945^2 + 81138^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-13630138069 is a prime.

It is a super-2 number, since 2×136301380692 (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13630138019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 235002352 + ... + 235002409.

It is an arithmetic number, because the mean of its divisors is an integer number (3525035715).

Almost surely, 213630138069 is an apocalyptic number.

It is an amenable number.

13630138069 is a deficient number, since it is larger than the sum of its proper divisors (470004791).

13630138069 is an equidigital number, since it uses as much as digits as its factorization.

13630138069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470004790.

The product of its (nonzero) digits is 69984, while the sum is 40.

The spelling of 13630138069 in words is "thirteen billion, six hundred thirty million, one hundred thirty-eight thousand, sixty-nine".

Divisors: 1 29 470004761 13630138069