216570773272 has 16 divisors (see below), whose sum is σ = 464080228560. Its totient is φ = 92816045664.

The previous prime is 216570773261. The next prime is 216570773281. The reversal of 216570773272 is 272377075612.

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, 1933667563 + ... + 1933667674.

It is an arithmetic number, because the mean of its divisors is an integer number (29005014285).

Almost surely, 2^216570773272 is an apocalyptic number.

It is an amenable number.

216570773272 is an abundant number, since it is smaller than the sum of its proper divisors (247509455288).

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

216570773272 is a wasteful number, since it uses less digits than its factorization.

216570773272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3867335250 (or 3867335246 counting only the distinct ones).

The product of its (nonzero) digits is 1728720, while the sum is 49.

The spelling of 216570773272 in words is "two hundred sixteen billion, five hundred seventy million, seven hundred seventy-three thousand, two hundred seventy-two".