216904941237 has 16 divisors (see below), whose sum is σ = 308798949888. Its totient is φ = 135099536880.

The previous prime is 216904941173. The next prime is 216904941263. The reversal of 216904941237 is 732149409612.

It is not a de Polignac number, because 216904941237 - 2⁶ = 216904941173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216904941277) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36549939 + ... + 36555872.

It is an arithmetic number, because the mean of its divisors is an integer number (19299934368).

Almost surely, 2^216904941237 is an apocalyptic number.

It is an amenable number.

216904941237 is a deficient number, since it is larger than the sum of its proper divisors (91894008651).

216904941237 is a wasteful number, since it uses less digits than its factorization.

216904941237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73105880.

The product of its (nonzero) digits is 653184, while the sum is 48.

The spelling of 216904941237 in words is "two hundred sixteen billion, nine hundred four million, nine hundred forty-one thousand, two hundred thirty-seven".