20580991010 has 32 divisors (see below), whose sum is σ = 39665706480. Its totient is φ = 7661074432.

The previous prime is 20580990973. The next prime is 20580991033. The reversal of 20580991010 is 1019908502.

It can be written as a sum of positive squares in 8 ways, for example, as 13491519409 + 7089471601 = 116153^2 + 84199^2 .

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, 665009 + ... + 695268.

Almost surely, 2^20580991010 is an apocalyptic number.

20580991010 is a deficient number, since it is larger than the sum of its proper divisors (19084715470).

20580991010 is a wasteful number, since it uses less digits than its factorization.

20580991010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1360390.

The product of its (nonzero) digits is 6480, while the sum is 35.

The spelling of 20580991010 in words is "twenty billion, five hundred eighty million, nine hundred ninety-one thousand, ten".