20057747560 has 32 divisors (see below), whose sum is σ = 45576772200. Its totient is φ = 7943660800.

The previous prime is 20057747533. The next prime is 20057747573. The reversal of 20057747560 is 6574775002.

It can be written as a sum of positive squares in 4 ways, for example, as 19801555524 + 256192036 = 140718^2 + 16006^2 .

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, 2478355 + ... + 2486434.

Almost surely, 2^20057747560 is an apocalyptic number.

20057747560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20057747560 is an abundant number, since it is smaller than the sum of its proper divisors (25519024640).

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

20057747560 is a wasteful number, since it uses less digits than its factorization.

20057747560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4964901 (or 4964897 counting only the distinct ones).

The product of its (nonzero) digits is 411600, while the sum is 43.

The spelling of 20057747560 in words is "twenty billion, fifty-seven million, seven hundred forty-seven thousand, five hundred sixty".