56156101611566 has 64 divisors (see below), whose sum is σ = 98052111311616. Its totient is φ = 23837649139200.

The previous prime is 56156101611551. The next prime is 56156101611607. The reversal of 56156101611566 is 66511610165165.

It is a super-4 number, since 4×56156101611566⁴ (a number of 56 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 419468696 + ... + 419602548.

It is an arithmetic number, because the mean of its divisors is an integer number (1532064239244).

Almost surely, 2^{56156101611566} is an apocalyptic number.

56156101611566 is a deficient number, since it is larger than the sum of its proper divisors (41896009700050).

56156101611566 is a wasteful number, since it uses less digits than its factorization.

56156101611566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142577.

The product of its (nonzero) digits is 972000, while the sum is 50.

The spelling of 56156101611566 in words is "fifty-six trillion, one hundred fifty-six billion, one hundred one million, six hundred eleven thousand, five hundred sixty-six".