56061555156 has 18 divisors (see below), whose sum is σ = 141711153402. Its totient is φ = 18687185040.

The previous prime is 56061555149. The next prime is 56061555217. The reversal of 56061555156 is 65155516065.

56061555156 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 55562032656 + 499522500 = 235716^2 + 22350^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 778632675 + ... + 778632746.

Almost surely, 2^56061555156 is an apocalyptic number.

It is an amenable number.

56061555156 is an abundant number, since it is smaller than the sum of its proper divisors (85649598246).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56061555156 is a wasteful number, since it uses less digits than its factorization.

56061555156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1557265431 (or 1557265426 counting only the distinct ones).

The product of its (nonzero) digits is 675000, while the sum is 45.

The spelling of 56061555156 in words is "fifty-six billion, sixty-one million, five hundred fifty-five thousand, one hundred fifty-six".