20005532004 has 24 divisors (see below), whose sum is σ = 47560322880. Its totient is φ = 6542689504.

The previous prime is 20005531991. The next prime is 20005532021. The reversal of 20005532004 is 40023550002.

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, 15726984 + ... + 15728255.

It is an arithmetic number, because the mean of its divisors is an integer number (1981680120).

Almost surely, 2^20005532004 is an apocalyptic number.

It is an amenable number.

20005532004 is an abundant number, since it is smaller than the sum of its proper divisors (27554790876).

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

20005532004 is a wasteful number, since it uses less digits than its factorization.

20005532004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31455299 (or 31455297 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 21.

The spelling of 20005532004 in words is "twenty billion, five million, five hundred thirty-two thousand, four".