56111051005100 has 108 divisors (see below), whose sum is σ = 152535734213184. Its totient is φ = 17758222715520.

The previous prime is 56111051005043. The next prime is 56111051005111. The reversal of 56111051005100 is 150015011165.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 56111051005100.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 440368412 + ... + 440495811.

Almost surely, 2^{56111051005100} is an apocalyptic number.

56111051005100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

56111051005100 is an abundant number, since it is smaller than the sum of its proper divisors (96424683208084).

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

56111051005100 is a wasteful number, since it uses less digits than its factorization.

56111051005100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880864264 (or 880864250 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 26.

Adding to 56111051005100 its reverse (150015011165), we get a palindrome (56261066016265).

The spelling of 56111051005100 in words is "fifty-six trillion, one hundred eleven billion, fifty-one million, five thousand, one hundred".