15951951360 has 480 divisors, whose sum is σ = 59117778720. Its totient is φ = 3961257984.

The previous prime is 15951951329. The next prime is 15951951361. The reversal of 15951951360 is 6315915951.

15951951360 is a `hidden beast` number, since 1 + 59 + 519 + 51 + 36 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (480).

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15951951361) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 54443374 + ... + 54443666.

It is an arithmetic number, because the mean of its divisors is an integer number (123162039).

Almost surely, 2^15951951360 is an apocalyptic number.

15951951360 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 15951951360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29558889360).

15951951360 is an abundant number, since it is smaller than the sum of its proper divisors (43165827360).

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

15951951360 is a wasteful number, since it uses less digits than its factorization.

15951951360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478 (or 459 counting only the distinct ones).

The product of its (nonzero) digits is 182250, while the sum is 45.

The spelling of 15951951360 in words is "fifteen billion, nine hundred fifty-one million, nine hundred fifty-one thousand, three hundred sixty".