13487399280 has 120 divisors (see below), whose sum is σ = 47679187920. Its totient is φ = 3407339520.

The previous prime is 13487399279. The next prime is 13487399297. The reversal of 13487399280 is 8299378431.

It is a tau number, because it is divible by the number of its divisors (120).

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

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, 479281 + ... + 506640.

It is an arithmetic number, because the mean of its divisors is an integer number (397326566).

Almost surely, 2^13487399280 is an apocalyptic number.

13487399280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13487399280 is an abundant number, since it is smaller than the sum of its proper divisors (34191788640).

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

13487399280 is a wasteful number, since it uses less digits than its factorization.

13487399280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 985959 (or 985950 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The spelling of 13487399280 in words is "thirteen billion, four hundred eighty-seven million, three hundred ninety-nine thousand, two hundred eighty".