20512245544 has 48 divisors (see below), whose sum is σ = 44783668800. Its totient is φ = 8782327008.

The previous prime is 20512245529. The next prime is 20512245583. The reversal of 20512245544 is 44554221502.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 382107 + ... + 432469.

It is an arithmetic number, because the mean of its divisors is an integer number (932993100).

Almost surely, 2^20512245544 is an apocalyptic number.

It is an amenable number.

20512245544 is an abundant number, since it is smaller than the sum of its proper divisors (24271423256).

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

20512245544 is a wasteful number, since it uses less digits than its factorization.

20512245544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51422 (or 51411 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 34.

The spelling of 20512245544 in words is "twenty billion, five hundred twelve million, two hundred forty-five thousand, five hundred forty-four".