20578607580 has 48 divisors (see below), whose sum is σ = 57629303424. Its totient is φ = 5486752320.

The previous prime is 20578607579. The next prime is 20578607629. The reversal of 20578607580 is 8570687502.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 408879 + ... + 456441.

It is an arithmetic number, because the mean of its divisors is an integer number (1200610488).

Almost surely, 2^20578607580 is an apocalyptic number.

20578607580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20578607580 is an abundant number, since it is smaller than the sum of its proper divisors (37050695844).

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

20578607580 is a wasteful number, since it uses less digits than its factorization.

20578607580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54786 (or 54784 counting only the distinct ones).

The product of its (nonzero) digits is 940800, while the sum is 48.

The spelling of 20578607580 in words is "twenty billion, five hundred seventy-eight million, six hundred seven thousand, five hundred eighty".