15851376540720 has 960 divisors, whose sum is σ = 67751099080704. Its totient is φ = 3237748899840.

The previous prime is 15851376540719. The next prime is 15851376540739. The reversal of 15851376540720 is 2704567315851.

15851376540720 is a `hidden beast` number, since 1 + 5 + 8 + 5 + 1 + 3 + 76 + 540 + 7 + 20 = 666.

It is a super-2 number, since 2×15851376540720² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 140715939 + ... + 140828541.

Almost surely, 2^{15851376540720} is an apocalyptic number.

15851376540720 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 15851376540720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33875549540352).

15851376540720 is an abundant number, since it is smaller than the sum of its proper divisors (51899722539984).

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

15851376540720 is a wasteful number, since it uses less digits than its factorization.

15851376540720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112730 (or 112721 counting only the distinct ones).

The product of its (nonzero) digits is 7056000, while the sum is 54.

The spelling of 15851376540720 in words is "fifteen trillion, eight hundred fifty-one billion, three hundred seventy-six million, five hundred forty thousand, seven hundred twenty".