56611056100 has 72 divisors (see below), whose sum is σ = 128888028416. Its totient is φ = 21554640000.

The previous prime is 56611056079. The next prime is 56611056109. The reversal of 56611056100 is 165011665.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (56611056109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39415 + ... + 338785.

Almost surely, 2^56611056100 is an apocalyptic number.

56611056100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56611056100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64444014208).

56611056100 is an abundant number, since it is smaller than the sum of its proper divisors (72276972316).

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

56611056100 is a wasteful number, since it uses less digits than its factorization.

56611056100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299477 (or 299470 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 31.

Adding to 56611056100 its reverse (165011665), we get a palindrome (56776067765).

The spelling of 56611056100 in words is "fifty-six billion, six hundred eleven million, fifty-six thousand, one hundred".