15501161660 has 24 divisors (see below), whose sum is σ = 32565347136. Its totient is φ = 6198006080.

The previous prime is 15501161659. The next prime is 15501161671. The reversal of 15501161660 is 6616110551.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101531 + ... + 203250.

It is an arithmetic number, because the mean of its divisors is an integer number (1356889464).

Almost surely, 2^15501161660 is an apocalyptic number.

15501161660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15501161660 is an abundant number, since it is smaller than the sum of its proper divisors (17064185476).

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

15501161660 is a wasteful number, since it uses less digits than its factorization.

15501161660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307333 (or 307331 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 32.

The spelling of 15501161660 in words is "fifteen billion, five hundred one million, one hundred sixty-one thousand, six hundred sixty".