15109979532844 has 48 divisors (see below), whose sum is σ = 32670226059520. Its totient is φ = 5969071362240.

The previous prime is 15109979532841. The next prime is 15109979532883. The reversal of 15109979532844 is 44823597990151.

It is a super-2 number, since 2×15109979532844² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 15109979532844.

It is not an unprimeable number, because it can be changed into a prime (15109979532841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 383794062 + ... + 383833429.

Almost surely, 2^{15109979532844} is an apocalyptic number.

15109979532844 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

15109979532844 is an abundant number, since it is smaller than the sum of its proper divisors (17560246526676).

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

15109979532844 is a wasteful number, since it uses less digits than its factorization.

15109979532844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 767627558 (or 767627556 counting only the distinct ones).

The product of its (nonzero) digits is 97977600, while the sum is 67.

The spelling of 15109979532844 in words is "fifteen trillion, one hundred nine billion, nine hundred seventy-nine million, five hundred thirty-two thousand, eight hundred forty-four".