20580536064 has 72 divisors (see below), whose sum is σ = 59753740032. Its totient is φ = 6236523520.

The previous prime is 20580536059. The next prime is 20580536083. The reversal of 20580536064 is 46063508502.

It is a super-2 number, since 2×20580536064² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1209624 + ... + 1226519.

It is an arithmetic number, because the mean of its divisors is an integer number (829913056).

Almost surely, 2^20580536064 is an apocalyptic number.

20580536064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20580536064 is an abundant number, since it is smaller than the sum of its proper divisors (39173203968).

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

20580536064 is a wasteful number, since it uses less digits than its factorization.

20580536064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2436173 (or 2436159 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 39.

The spelling of 20580536064 in words is "twenty billion, five hundred eighty million, five hundred thirty-six thousand, sixty-four".