20112512544 has 60 divisors (see below), whose sum is σ = 59150348334. Its totient is φ = 6704169984.

The previous prime is 20112512531. The next prime is 20112512561. The reversal of 20112512544 is 44521521102.

It is a happy number.

20112512544 is a `hidden beast` number, since 2 + 0 + 112 + 5 + 1 + 2 + 544 = 666.

It can be written as a sum of positive squares in only one way, i.e., 16656483600 + 3456028944 = 129060^2 + 58788^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3877137 + ... + 3882320.

Almost surely, 2^20112512544 is an apocalyptic number.

20112512544 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20112512544 is an abundant number, since it is smaller than the sum of its proper divisors (39037835790).

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

20112512544 is an equidigital number, since it uses as much as digits as its factorization.

20112512544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7759479 (or 7759462 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The spelling of 20112512544 in words is "twenty billion, one hundred twelve million, five hundred twelve thousand, five hundred forty-four".