215412230664 has 48 divisors (see below), whose sum is σ = 587271784320. Its totient is φ = 71328549600.

The previous prime is 215412230659. The next prime is 215412230701. The reversal of 215412230664 is 466032214512.

215412230664 is a `hidden beast` number, since 2 + 1 + 5 + 412 + 230 + 6 + 6 + 4 = 666.

It is a super-3 number, since 3×215412230664³ (a number of 35 digits) contains 333 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 11 ways as a sum of consecutive naturals, for example, 9895872 + ... + 9917615.

It is an arithmetic number, because the mean of its divisors is an integer number (12234828840).

Almost surely, 2^215412230664 is an apocalyptic number.

215412230664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

215412230664 is an abundant number, since it is smaller than the sum of its proper divisors (371859553656).

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

215412230664 is a wasteful number, since it uses less digits than its factorization.

215412230664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19813650 (or 19813643 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The spelling of 215412230664 in words is "two hundred fifteen billion, four hundred twelve million, two hundred thirty thousand, six hundred sixty-four".