15655056161 has 2 divisors, whose sum is σ = 15655056162. Its totient is φ = 15655056160.

The previous prime is 15655056149. The next prime is 15655056187. The reversal of 15655056161 is 16165055651.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10111509136 + 5543547025 = 100556^2 + 74455^2 .

It is a cyclic number.

It is not a de Polignac number, because 15655056161 - 2⁶ = 15655056097 is a prime.

It is not a weakly prime, because it can be changed into another prime (15655056121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7827528080 + 7827528081.

It is an arithmetic number, because the mean of its divisors is an integer number (7827528081).

Almost surely, 2^15655056161 is an apocalyptic number.

It is an amenable number.

15655056161 is a deficient number, since it is larger than the sum of its proper divisors (1).

15655056161 is an equidigital number, since it uses as much as digits as its factorization.

15655056161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 135000, while the sum is 41.

The spelling of 15655056161 in words is "fifteen billion, six hundred fifty-five million, fifty-six thousand, one hundred sixty-one".