15401696660 has 36 divisors (see below), whose sum is σ = 37624147092. Its totient is φ = 5280581376.

The previous prime is 15401696657. The next prime is 15401696689. The reversal of 15401696660 is 6669610451.

It can be written as a sum of positive squares in 2 ways, for example, as 2116368016 + 13285328644 = 46004^2 + 115262^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7857029 + ... + 7858988.

It is an arithmetic number, because the mean of its divisors is an integer number (1045115197).

Almost surely, 2^15401696660 is an apocalyptic number.

15401696660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15401696660 is an abundant number, since it is smaller than the sum of its proper divisors (22222450432).

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

15401696660 is a wasteful number, since it uses less digits than its factorization.

15401696660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15716040 (or 15716031 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 44.

The spelling of 15401696660 in words is "fifteen billion, four hundred one million, six hundred ninety-six thousand, six hundred sixty".