156656111216657 has 8 divisors (see below), whose sum is σ = 168706708781184. Its totient is φ = 144605531862288.

The previous prime is 156656111216651. The next prime is 156656111216659. The reversal of 156656111216657 is 756612111656651.

It is a happy number.

156656111216657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 156656111216657 - 2¹⁰ = 156656111215633 is a prime.

It is a super-2 number, since 2×156656111216657² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 156656111216596 and 156656111216605.

It is not an unprimeable number, because it can be changed into a prime (156656111216651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17144438 + ... + 24642320.

It is an arithmetic number, because the mean of its divisors is an integer number (21088338597648).

Almost surely, 2^{156656111216657} is an apocalyptic number.

It is an amenable number.

156656111216657 is a deficient number, since it is larger than the sum of its proper divisors (12050597564527).

156656111216657 is a wasteful number, since it uses less digits than its factorization.

156656111216657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9105079.

The product of its digits is 13608000, while the sum is 59.

The spelling of 156656111216657 in words is "one hundred fifty-six trillion, six hundred fifty-six billion, one hundred eleven million, two hundred sixteen thousand, six hundred fifty-seven".