15391740660 has 24 divisors (see below), whose sum is σ = 43096874016. Its totient is φ = 4104464160.

The previous prime is 15391740659. The next prime is 15391740671. The reversal of 15391740660 is 6604719351.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128264446 + ... + 128264565.

It is an arithmetic number, because the mean of its divisors is an integer number (1795703084).

Almost surely, 2^15391740660 is an apocalyptic number.

15391740660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15391740660 is an abundant number, since it is smaller than the sum of its proper divisors (27705133356).

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

15391740660 is a wasteful number, since it uses less digits than its factorization.

15391740660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256529023 (or 256529021 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 42.

The spelling of 15391740660 in words is "fifteen billion, three hundred ninety-one million, seven hundred forty thousand, six hundred sixty".