20215533716 has 12 divisors (see below), whose sum is σ = 40431067488. Its totient is φ = 8663800152.

The previous prime is 20215533691. The next prime is 20215533743. The reversal of 20215533716 is 61733551202.

20215533716 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 360991646 + ... + 360991701.

It is an arithmetic number, because the mean of its divisors is an integer number (3369255624).

Almost surely, 2^20215533716 is an apocalyptic number.

It is an amenable number.

20215533716 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20215533716 is a wasteful number, since it uses less digits than its factorization.

20215533716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721983358 (or 721983356 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 35.

The spelling of 20215533716 in words is "twenty billion, two hundred fifteen million, five hundred thirty-three thousand, seven hundred sixteen".