216957027444 has 24 divisors (see below), whose sum is σ = 506311235808. Its totient is φ = 72307841760.

The previous prime is 216957027439. The next prime is 216957027487. The reversal of 216957027444 is 444720759612.

It is a congruent number.

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, 1314787 + ... + 1470570.

It is an arithmetic number, because the mean of its divisors is an integer number (21096301492).

Almost surely, 2^216957027444 is an apocalyptic number.

It is an amenable number.

216957027444 is an abundant number, since it is smaller than the sum of its proper divisors (289354208364).

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

216957027444 is a wasteful number, since it uses less digits than its factorization.

216957027444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2791855 (or 2791853 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 51.

The spelling of 216957027444 in words is "two hundred sixteen billion, nine hundred fifty-seven million, twenty-seven thousand, four hundred forty-four".