216731022480 has 240 divisors, whose sum is σ = 875615445120. Its totient is φ = 46931208192.

The previous prime is 216731022479. The next prime is 216731022533. The reversal of 216731022480 is 84220137612.

It is a happy number.

216731022480 is a `hidden beast` number, since 2 + 1 + 6 + 73 + 102 + 2 + 480 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a super-2 number, since 2×216731022480² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1035877 + ... + 1227396.

It is an arithmetic number, because the mean of its divisors is an integer number (3648397688).

Almost surely, 2^216731022480 is an apocalyptic number.

216731022480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

216731022480 is an abundant number, since it is smaller than the sum of its proper divisors (658884422640).

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

216731022480 is a wasteful number, since it uses less digits than its factorization.

216731022480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2263318 (or 2263309 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The spelling of 216731022480 in words is "two hundred sixteen billion, seven hundred thirty-one million, twenty-two thousand, four hundred eighty".