13988373520 has 40 divisors (see below), whose sum is σ = 35479604160. Its totient is φ = 5086680960.

The previous prime is 13988373493. The next prime is 13988373521. The reversal of 13988373520 is 2537388931.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (13988373521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7947060 + ... + 7948819.

It is an arithmetic number, because the mean of its divisors is an integer number (886990104).

Almost surely, 2^13988373520 is an apocalyptic number.

13988373520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13988373520 is an abundant number, since it is smaller than the sum of its proper divisors (21491230640).

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

13988373520 is a wasteful number, since it uses less digits than its factorization.

13988373520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15895903 (or 15895897 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 49.

The spelling of 13988373520 in words is "thirteen billion, nine hundred eighty-eight million, three hundred seventy-three thousand, five hundred twenty".