216925118510884 has 27 divisors (see below), whose sum is σ = 441597982442043. Its totient is φ = 92967819562968.

The previous prime is 216925118510869. The next prime is 216925118510911. The reversal of 216925118510884 is 488015811529612.

The square root of 216925118510884 is 14728378.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×216925118510884² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 205671279 + ... + 206723305.

Almost surely, 2^{216925118510884} is an apocalyptic number.

216925118510884 is the 14728378-th square number.

It is an amenable number.

216925118510884 is an abundant number, since it is smaller than the sum of its proper divisors (224672863931159).

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

216925118510884 is an frugal number, since it uses more digits than its factorization.

216925118510884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2104072 (or 1052036 counting only the distinct ones).

The product of its (nonzero) digits is 11059200, while the sum is 61.

The spelling of 216925118510884 in words is "two hundred sixteen trillion, nine hundred twenty-five billion, one hundred eighteen million, five hundred ten thousand, eight hundred eighty-four".