13937297640 has 256 divisors, whose sum is σ = 50008389120. Its totient is φ = 3040727040.

The previous prime is 13937297623. The next prime is 13937297653. The reversal of 13937297640 is 4679273931.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1643010 + ... + 1651470.

It is an arithmetic number, because the mean of its divisors is an integer number (195345270).

Almost surely, 2^13937297640 is an apocalyptic number.

13937297640 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 13937297640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25004194560).

13937297640 is an abundant number, since it is smaller than the sum of its proper divisors (36071091480).

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

13937297640 is a wasteful number, since it uses less digits than its factorization.

13937297640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8572 (or 8568 counting only the distinct ones).

The product of its (nonzero) digits is 1714608, while the sum is 51.

The spelling of 13937297640 in words is "thirteen billion, nine hundred thirty-seven million, two hundred ninety-seven thousand, six hundred forty".