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13898064607 = 71985437801
BaseRepresentation
bin11001111000110001…
…11010001011011111
31022212120122211111121
430330120322023133
5211430401031412
610215031431411
71001256412540
oct147430721337
938776584447
1013898064607
115992105709
12283a525567
13140646b48b
1495bb404c7
155651ea107
hex33c63a2df

13898064607 has 4 divisors (see below), whose sum is σ = 15883502416. Its totient is φ = 11912626800.

The previous prime is 13898064589. The next prime is 13898064637. The reversal of 13898064607 is 70646089831.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70646089831 = 174155652343.

It is a cyclic number.

It is not a de Polignac number, because 13898064607 - 211 = 13898062559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13898064637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 992718894 + ... + 992718907.

It is an arithmetic number, because the mean of its divisors is an integer number (3970875604).

Almost surely, 213898064607 is an apocalyptic number.

13898064607 is a deficient number, since it is larger than the sum of its proper divisors (1985437809).

13898064607 is an equidigital number, since it uses as much as digits as its factorization.

13898064607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1985437808.

The product of its (nonzero) digits is 1741824, while the sum is 52.

The spelling of 13898064607 in words is "thirteen billion, eight hundred ninety-eight million, sixty-four thousand, six hundred seven".

Divisors: 1 7 1985437801 13898064607