20656276100 has 36 divisors (see below), whose sum is σ = 45286244724. Its totient is φ = 8177326080.

The previous prime is 20656276099. The next prime is 20656276111. The reversal of 20656276100 is 167265602.

It can be written as a sum of positive squares in 6 ways, for example, as 1957354564 + 18698921536 = 44242^2 + 136744^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1055057 + ... + 1074456.

Almost surely, 2^20656276100 is an apocalyptic number.

20656276100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20656276100 is an abundant number, since it is smaller than the sum of its proper divisors (24629968624).

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

20656276100 is a wasteful number, since it uses less digits than its factorization.

20656276100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2129624 (or 2129617 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The spelling of 20656276100 in words is "twenty billion, six hundred fifty-six million, two hundred seventy-six thousand, one hundred".