2157476318368 has 96 divisors (see below), whose sum is σ = 4869779080320. Its totient is φ = 921691008000.

The previous prime is 2157476318311. The next prime is 2157476318381. The reversal of 2157476318368 is 8638136747512.

It is a super-3 number, since 3×2157476318368³ (a number of 38 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 205449118 + ... + 205459618.

It is an arithmetic number, because the mean of its divisors is an integer number (50726865420).

Almost surely, 2^{2157476318368} is an apocalyptic number.

2157476318368 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2157476318368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2434889540160).

2157476318368 is an abundant number, since it is smaller than the sum of its proper divisors (2712302761952).

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

2157476318368 is a wasteful number, since it uses less digits than its factorization.

2157476318368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13350 (or 13342 counting only the distinct ones).

The product of its digits is 40642560, while the sum is 61.

The spelling of 2157476318368 in words is "two trillion, one hundred fifty-seven billion, four hundred seventy-six million, three hundred eighteen thousand, three hundred sixty-eight".