215468213487408 has 120 divisors (see below), whose sum is σ = 689351344145568. Its totient is φ = 61544920743936.

The previous prime is 215468213487403. The next prime is 215468213487481. The reversal of 215468213487408 is 804784312864512.

215468213487408 is a `hidden beast` number, since 2 + 1 + 5 + 4 + 6 + 8 + 213 + 4 + 8 + 7 + 408 = 666.

It is a super-2 number, since 2×215468213487408² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (215468213487403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26690385 + ... + 33812912.

Almost surely, 2^{215468213487408} is an apocalyptic number.

215468213487408 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

215468213487408 is an abundant number, since it is smaller than the sum of its proper divisors (473883130658160).

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

215468213487408 is a wasteful number, since it uses less digits than its factorization.

215468213487408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60506851 (or 60506842 counting only the distinct ones).

The product of its (nonzero) digits is 82575360, while the sum is 63.

The spelling of 215468213487408 in words is "two hundred fifteen trillion, four hundred sixty-eight billion, two hundred thirteen million, four hundred eighty-seven thousand, four hundred eight".