216707662400 has 42 divisors (see below), whose sum is σ = 533236295730. Its totient is φ = 86683064320.

The previous prime is 216707662363. The next prime is 216707662427. The reversal of 216707662400 is 4266707612.

It can be written as a sum of positive squares in 3 ways, for example, as 71991329344 + 144716333056 = 268312^2 + 380416^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 67719545 + ... + 67722744.

Almost surely, 2^216707662400 is an apocalyptic number.

216707662400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

216707662400 is an abundant number, since it is smaller than the sum of its proper divisors (316528633330).

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

216707662400 is a wasteful number, since it uses less digits than its factorization.

216707662400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135442311 (or 135442296 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 41.

The spelling of 216707662400 in words is "two hundred sixteen billion, seven hundred seven million, six hundred sixty-two thousand, four hundred".