13657487690 has 64 divisors (see below), whose sum is σ = 30664362240. Its totient is φ = 4254819840.

The previous prime is 13657487677. The next prime is 13657487707. The reversal of 13657487690 is 9678475631.

It is a super-2 number, since 2×13657487690² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2668574 + ... + 2673686.

It is an arithmetic number, because the mean of its divisors is an integer number (479130660).

Almost surely, 2^13657487690 is an apocalyptic number.

13657487690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13657487690 is an abundant number, since it is smaller than the sum of its proper divisors (17006874550).

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

13657487690 is a wasteful number, since it uses less digits than its factorization.

13657487690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8607.

The product of its (nonzero) digits is 7620480, while the sum is 56.

The spelling of 13657487690 in words is "thirteen billion, six hundred fifty-seven million, four hundred eighty-seven thousand, six hundred ninety".