15745960639 has 2 divisors, whose sum is σ = 15745960640. Its totient is φ = 15745960638.

The previous prime is 15745960631. The next prime is 15745960673. The reversal of 15745960639 is 93606954751.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15745960639 - 2³ = 15745960631 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15745960639.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15745960631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7872980319 + 7872980320.

It is an arithmetic number, because the mean of its divisors is an integer number (7872980320).

Almost surely, 2^15745960639 is an apocalyptic number.

15745960639 is a deficient number, since it is larger than the sum of its proper divisors (1).

15745960639 is an equidigital number, since it uses as much as digits as its factorization.

15745960639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6123600, while the sum is 55.

The spelling of 15745960639 in words is "fifteen billion, seven hundred forty-five million, nine hundred sixty thousand, six hundred thirty-nine".