156752630121557 has 16 divisors (see below), whose sum is σ = 159659795288448. Its totient is φ = 153872898766080.

The previous prime is 156752630121553. The next prime is 156752630121601. The reversal of 156752630121557 is 755121036257651.

It is a cyclic number.

It is not a de Polignac number, because 156752630121557 - 2² = 156752630121553 is a prime.

It is a super-2 number, since 2×156752630121557² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156752630121553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1621208 + ... + 17780145.

It is an arithmetic number, because the mean of its divisors is an integer number (9978737205528).

Almost surely, 2^{156752630121557} is an apocalyptic number.

It is an amenable number.

156752630121557 is a deficient number, since it is larger than the sum of its proper divisors (2907165166891).

156752630121557 is a wasteful number, since it uses less digits than its factorization.

156752630121557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19402060.

The product of its (nonzero) digits is 13230000, while the sum is 56.

The spelling of 156752630121557 in words is "one hundred fifty-six trillion, seven hundred fifty-two billion, six hundred thirty million, one hundred twenty-one thousand, five hundred fifty-seven".