20056551700 has 36 divisors (see below), whose sum is σ = 43566850432. Its totient is φ = 8014485600.

The previous prime is 20056551689. The next prime is 20056551787. The reversal of 20056551700 is 715565002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2094 + ... + 200293.

Almost surely, 2^20056551700 is an apocalyptic number.

20056551700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20056551700 is an abundant number, since it is smaller than the sum of its proper divisors (23510298732).

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

20056551700 is a wasteful number, since it uses less digits than its factorization.

20056551700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203392 (or 203385 counting only the distinct ones).

The product of its (nonzero) digits is 10500, while the sum is 31.

The spelling of 20056551700 in words is "twenty billion, fifty-six million, five hundred fifty-one thousand, seven hundred".