15659107649 has 2 divisors, whose sum is σ = 15659107650. Its totient is φ = 15659107648.

The previous prime is 15659107627. The next prime is 15659107661. The reversal of 15659107649 is 94670195651.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10775893249 + 4883214400 = 103807^2 + 69880^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15659107649 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15659107649.

It is not a weakly prime, because it can be changed into another prime (15659107669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7829553824 + 7829553825.

It is an arithmetic number, because the mean of its divisors is an integer number (7829553825).

Almost surely, 2^15659107649 is an apocalyptic number.

It is an amenable number.

15659107649 is a deficient number, since it is larger than the sum of its proper divisors (1).

15659107649 is an equidigital number, since it uses as much as digits as its factorization.

15659107649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2041200, while the sum is 53.

The spelling of 15659107649 in words is "fifteen billion, six hundred fifty-nine million, one hundred seven thousand, six hundred forty-nine".