15668115343920 has 2880 divisors, whose sum is σ = 66390242181120. Its totient is φ = 3286780084224.

The previous prime is 15668115343849. The next prime is 15668115343943. The reversal of 15668115343920 is 2934351186651.

15668115343920 is a `hidden beast` number, since 1 + 5 + 6 + 6 + 8 + 11 + 534 + 3 + 92 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 575 ways as a sum of consecutive naturals, for example, 123370986897 + ... + 123370987023.

It is an arithmetic number, because the mean of its divisors is an integer number (23052167424).

Almost surely, 2^{15668115343920} is an apocalyptic number.

15668115343920 is a gapful number since it is divisible by the number (10) 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 15668115343920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33195121090560).

15668115343920 is an abundant number, since it is smaller than the sum of its proper divisors (50722126837200).

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

15668115343920 is a wasteful number, since it uses less digits than its factorization.

15668115343920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324 (or 302 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 54.

The spelling of 15668115343920 in words is "fifteen trillion, six hundred sixty-eight billion, one hundred fifteen million, three hundred forty-three thousand, nine hundred twenty".