15331864540 has 48 divisors (see below), whose sum is σ = 32473782432. Its totient is φ = 6080126976.

The previous prime is 15331864519. The next prime is 15331864567. The reversal of 15331864540 is 4546813351.

It is a junction number, because it is equal to n+sod(n) for n = 15331864493 and 15331864502.

It is a congruent number.

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, 2416252 + ... + 2422588.

It is an arithmetic number, because the mean of its divisors is an integer number (676537134).

Almost surely, 2^15331864540 is an apocalyptic number.

15331864540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15331864540 is an abundant number, since it is smaller than the sum of its proper divisors (17141917892).

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

15331864540 is a wasteful number, since it uses less digits than its factorization.

15331864540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7366 (or 7364 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 40.

The spelling of 15331864540 in words is "fifteen billion, three hundred thirty-one million, eight hundred sixty-four thousand, five hundred forty".