20552512506 has 32 divisors (see below), whose sum is σ = 41740919808. Its totient is φ = 6744965040.

The previous prime is 20552512493. The next prime is 20552512517. The reversal of 20552512506 is 60521525502.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 795711 + ... + 821133.

It is an arithmetic number, because the mean of its divisors is an integer number (1304403744).

Almost surely, 2^20552512506 is an apocalyptic number.

20552512506 is an abundant number, since it is smaller than the sum of its proper divisors (21188407302).

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

20552512506 is a wasteful number, since it uses less digits than its factorization.

20552512506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27506.

The product of its (nonzero) digits is 30000, while the sum is 33.

The spelling of 20552512506 in words is "twenty billion, five hundred fifty-two million, five hundred twelve thousand, five hundred six".