13684538140 has 48 divisors (see below), whose sum is σ = 35369272512. Its totient is φ = 4330930176.

The previous prime is 13684538129. The next prime is 13684538173. The reversal of 13684538140 is 4183548631.

It is a super-2 number, since 2×13684538140² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3757669 + ... + 3761308.

It is an arithmetic number, because the mean of its divisors is an integer number (736859844).

Almost surely, 2^13684538140 is an apocalyptic number.

13684538140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13684538140 is an abundant number, since it is smaller than the sum of its proper divisors (21684734372).

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

13684538140 is a wasteful number, since it uses less digits than its factorization.

13684538140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7519006 (or 7519004 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 43.

The spelling of 13684538140 in words is "thirteen billion, six hundred eighty-four million, five hundred thirty-eight thousand, one hundred forty".