15655011556607 has 2 divisors, whose sum is σ = 15655011556608. Its totient is φ = 15655011556606.

The previous prime is 15655011556589. The next prime is 15655011556661. The reversal of 15655011556607 is 70665511055651.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15655011556607 - 2²⁰ = 15655010508031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15655011556007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7827505778303 + 7827505778304.

It is an arithmetic number, because the mean of its divisors is an integer number (7827505778304).

Almost surely, 2^{15655011556607} is an apocalyptic number.

15655011556607 is a deficient number, since it is larger than the sum of its proper divisors (1).

15655011556607 is an equidigital number, since it uses as much as digits as its factorization.

15655011556607 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4725000, while the sum is 53.

The spelling of 15655011556607 in words is "fifteen trillion, six hundred fifty-five billion, eleven million, five hundred fifty-six thousand, six hundred seven".