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10642239269 = 55911903459
BaseRepresentation
bin10011110100101001…
…11010111100100101
31000110200020202202222
421322110322330211
5133243403124034
64520004042125
7524503353434
oct117224727445
930420222688
1010642239269
1145712a2972
122090093345
131007a84bcc
1472d58311b
1542447112e
hex27a53af25

10642239269 has 4 divisors (see below), whose sum is σ = 10644148320. Its totient is φ = 10640330220.

The previous prime is 10642239253. The next prime is 10642239277. The reversal of 10642239269 is 96293224601.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10642239269 - 24 = 10642239253 is a prime.

It is a super-2 number, since 2×106422392692 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10647239269) 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, 946139 + ... + 957320.

It is an arithmetic number, because the mean of its divisors is an integer number (2661037080).

Almost surely, 210642239269 is an apocalyptic number.

It is an amenable number.

10642239269 is a deficient number, since it is larger than the sum of its proper divisors (1909051).

10642239269 is an equidigital number, since it uses as much as digits as its factorization.

10642239269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1909050.

The product of its (nonzero) digits is 279936, while the sum is 44.

The spelling of 10642239269 in words is "ten billion, six hundred forty-two million, two hundred thirty-nine thousand, two hundred sixty-nine".

Divisors: 1 5591 1903459 10642239269