20056016637 has 32 divisors (see below), whose sum is σ = 31313788800. Its totient is φ = 12651831936.

The previous prime is 20056016633. The next prime is 20056016647. The reversal of 20056016637 is 73661065002.

20056016637 is a `hidden beast` number, since 2 + 0 + 0 + 5 + 6 + 0 + 16 + 637 = 666.

It is not a de Polignac number, because 20056016637 - 2² = 20056016633 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20056016633) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 414673 + ... + 460505.

It is an arithmetic number, because the mean of its divisors is an integer number (978555900).

Almost surely, 2^20056016637 is an apocalyptic number.

20056016637 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

20056016637 is a deficient number, since it is larger than the sum of its proper divisors (11257772163).

20056016637 is a wasteful number, since it uses less digits than its factorization.

20056016637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46714 (or 46708 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The spelling of 20056016637 in words is "twenty billion, fifty-six million, sixteen thousand, six hundred thirty-seven".