20585085260 has 24 divisors (see below), whose sum is σ = 45503873520. Its totient is φ = 7800663744.

The previous prime is 20585085253. The next prime is 20585085281. The reversal of 20585085260 is 6258058502.

It is a super-2 number, since 2×20585085260² (a number of 21 digits) contains 22 as substring.

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, 27085259 + ... + 27086018.

It is an arithmetic number, because the mean of its divisors is an integer number (1895994730).

Almost surely, 2^20585085260 is an apocalyptic number.

20585085260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20585085260 is an abundant number, since it is smaller than the sum of its proper divisors (24918788260).

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

20585085260 is a wasteful number, since it uses less digits than its factorization.

20585085260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54171305 (or 54171303 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 41.

The spelling of 20585085260 in words is "twenty billion, five hundred eighty-five million, eighty-five thousand, two hundred sixty".