56121817506142 has 16 divisors (see below), whose sum is σ = 84984173633520. Its totient is φ = 27794692086912.

The previous prime is 56121817506113. The next prime is 56121817506199. The reversal of 56121817506142 is 24160571812165.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232993993 + ... + 233234740.

It is an arithmetic number, because the mean of its divisors is an integer number (5311510852095).

Almost surely, 2^{56121817506142} is an apocalyptic number.

56121817506142 is a deficient number, since it is larger than the sum of its proper divisors (28862356127378).

56121817506142 is a wasteful number, since it uses less digits than its factorization.

56121817506142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466229307.

The product of its (nonzero) digits is 806400, while the sum is 49.

The spelling of 56121817506142 in words is "fifty-six trillion, one hundred twenty-one billion, eight hundred seventeen million, five hundred six thousand, one hundred forty-two".