15700116780 has 72 divisors (see below), whose sum is σ = 49159953024. Its totient is φ = 4051641600.

The previous prime is 15700116769. The next prime is 15700116781. The reversal of 15700116780 is 8761100751.

It is a happy number.

15700116780 is a `hidden beast` number, since 1 + 570 + 0 + 1 + 1 + 6 + 7 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (15700116781) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1401241 + ... + 1412400.

Almost surely, 2^15700116780 is an apocalyptic number.

15700116780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15700116780 is an abundant number, since it is smaller than the sum of its proper divisors (33459836244).

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

15700116780 is a wasteful number, since it uses less digits than its factorization.

15700116780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2813687 (or 2813682 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 36.

The spelling of 15700116780 in words is "fifteen billion, seven hundred million, one hundred sixteen thousand, seven hundred eighty".