20538344484 has 36 divisors (see below), whose sum is σ = 59332995904. Its totient is φ = 5868098352.

The previous prime is 20538344473. The next prime is 20538344501. The reversal of 20538344484 is 48444383502.

It is a happy number.

20538344484 is a `hidden beast` number, since 2 + 0 + 53 + 83 + 44 + 484 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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, 40750432 + ... + 40750935.

Almost surely, 2^20538344484 is an apocalyptic number.

It is an amenable number.

20538344484 is an abundant number, since it is smaller than the sum of its proper divisors (38794651420).

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

20538344484 is a wasteful number, since it uses less digits than its factorization.

20538344484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81501384 (or 81501379 counting only the distinct ones).

The product of its (nonzero) digits is 1474560, while the sum is 45.

The spelling of 20538344484 in words is "twenty billion, five hundred thirty-eight million, three hundred forty-four thousand, four hundred eighty-four".