13887512637500 has 72 divisors (see below), whose sum is σ = 30404710630224. Its totient is φ = 5549935760000.

The previous prime is 13887512637487. The next prime is 13887512637521. The reversal of 13887512637500 is 573621578831.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13206119 + ... + 14218881.

It is an arithmetic number, because the mean of its divisors is an integer number (422287647642).

Almost surely, 2^{13887512637500} is an apocalyptic number.

13887512637500 is a gapful number since it is divisible by the number (10) 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 13887512637500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15202355315112).

13887512637500 is an abundant number, since it is smaller than the sum of its proper divisors (16517197992724).

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

13887512637500 is a wasteful number, since it uses less digits than its factorization.

13887512637500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1013889 (or 1013867 counting only the distinct ones).

The product of its (nonzero) digits is 8467200, while the sum is 56.

The spelling of 13887512637500 in words is "thirteen trillion, eight hundred eighty-seven billion, five hundred twelve million, six hundred thirty-seven thousand, five hundred".