13985637500 has 36 divisors (see below), whose sum is σ = 30591651384. Its totient is φ = 5594250000.

The previous prime is 13985637481. The next prime is 13985637517. The reversal of 13985637500 is 573658931.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 546926 + ... + 571925.

It is an arithmetic number, because the mean of its divisors is an integer number (849768094).

Almost surely, 2^13985637500 is an apocalyptic number.

13985637500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13985637500 is an abundant number, since it is smaller than the sum of its proper divisors (16606013884).

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

13985637500 is an equidigital number, since it uses as much as digits as its factorization.

13985637500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1118880 (or 1118858 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 47.

The spelling of 13985637500 in words is "thirteen billion, nine hundred eighty-five million, six hundred thirty-seven thousand, five hundred".