15876304780 has 72 divisors (see below), whose sum is σ = 39062898000. Its totient is φ = 5404097664.

The previous prime is 15876304747. The next prime is 15876304831. The reversal of 15876304780 is 8740367851.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 77946 + ... + 194494.

It is an arithmetic number, because the mean of its divisors is an integer number (542540250).

Almost surely, 2^15876304780 is an apocalyptic number.

15876304780 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 15876304780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19531449000).

15876304780 is an abundant number, since it is smaller than the sum of its proper divisors (23186593220).

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

15876304780 is a wasteful number, since it uses less digits than its factorization.

15876304780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116711 (or 116702 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 49.

The spelling of 15876304780 in words is "fifteen billion, eight hundred seventy-six million, three hundred four thousand, seven hundred eighty".