216104537 has 16 divisors (see below), whose sum is σ = 248651520. Its totient is φ = 185749200.

The previous prime is 216104533. The next prime is 216104569. The reversal of 216104537 is 735401612.

It is a cyclic number.

It is not a de Polignac number, because 216104537 - 2² = 216104533 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216104533) 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, 183962 + ... + 185132.

It is an arithmetic number, because the mean of its divisors is an integer number (15540720).

Almost surely, 2^216104537 is an apocalyptic number.

It is an amenable number.

216104537 is a deficient number, since it is larger than the sum of its proper divisors (32546983).

216104537 is a wasteful number, since it uses less digits than its factorization.

216104537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2084.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 216104537 is about 14700.4944474667. The cubic root of 216104537 is about 600.0967779077.

The spelling of 216104537 in words is "two hundred sixteen million, one hundred four thousand, five hundred thirty-seven".