13520666124 has 120 divisors (see below), whose sum is σ = 41157613728. Its totient is φ = 3790126080.

The previous prime is 13520666119. The next prime is 13520666141. The reversal of 13520666124 is 42166602531.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 63964 + ... + 176444.

Almost surely, 2^13520666124 is an apocalyptic number.

13520666124 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13520666124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20578806864).

13520666124 is an abundant number, since it is smaller than the sum of its proper divisors (27636947604).

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

13520666124 is a wasteful number, since it uses less digits than its factorization.

13520666124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112557 (or 112546 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The spelling of 13520666124 in words is "thirteen billion, five hundred twenty million, six hundred sixty-six thousand, one hundred twenty-four".