15366660780 has 48 divisors (see below), whose sum is σ = 45291214080. Its totient is φ = 3882103488.

The previous prime is 15366660769. The next prime is 15366660851. The reversal of 15366660780 is 8706666351.

It is a super-2 number, since 2×15366660780² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6738624 + ... + 6740903.

It is an arithmetic number, because the mean of its divisors is an integer number (943566960).

Almost surely, 2^15366660780 is an apocalyptic number.

15366660780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15366660780 is an abundant number, since it is smaller than the sum of its proper divisors (29924553300).

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

15366660780 is a wasteful number, since it uses less digits than its factorization.

15366660780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13479558 (or 13479556 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 48.

The spelling of 15366660780 in words is "fifteen billion, three hundred sixty-six million, six hundred sixty thousand, seven hundred eighty".