156555506651057 has 2 divisors, whose sum is σ = 156555506651058. Its totient is φ = 156555506651056.

The previous prime is 156555506651041. The next prime is 156555506651113. The reversal of 156555506651057 is 750156605555651.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 150042680154481 + 6512826496576 = 12249191^2 + 2552024^2 .

It is a cyclic number.

It is not a de Polignac number, because 156555506651057 - 2⁴ = 156555506651041 is a prime.

It is not a weakly prime, because it can be changed into another prime (156555506551057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78277753325528 + 78277753325529.

It is an arithmetic number, because the mean of its divisors is an integer number (78277753325529).

Almost surely, 2^{156555506651057} is an apocalyptic number.

It is an amenable number.

156555506651057 is a deficient number, since it is larger than the sum of its proper divisors (1).

156555506651057 is an equidigital number, since it uses as much as digits as its factorization.

156555506651057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 118125000, while the sum is 62.

The spelling of 156555506651057 in words is "one hundred fifty-six trillion, five hundred fifty-five billion, five hundred six million, six hundred fifty-one thousand, fifty-seven".