20324551140 has 72 divisors (see below), whose sum is σ = 63084909888. Its totient is φ = 5293834560.

The previous prime is 20324551129. The next prime is 20324551147. The reversal of 20324551140 is 4115542302.

20324551140 is a `hidden beast` number, since 203 + 2 + 455 + 1 + 1 + 4 + 0 = 666.

It is not an unprimeable number, because it can be changed into a prime (20324551147) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1305216 + ... + 1320695.

It is an arithmetic number, because the mean of its divisors is an integer number (876179304).

Almost surely, 2^20324551140 is an apocalyptic number.

20324551140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20324551140 is an abundant number, since it is smaller than the sum of its proper divisors (42760358748).

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

20324551140 is a wasteful number, since it uses less digits than its factorization.

20324551140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2625969 (or 2625964 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The spelling of 20324551140 in words is "twenty billion, three hundred twenty-four million, five hundred fifty-one thousand, one hundred forty".