13957864640 has 112 divisors (see below), whose sum is σ = 34755685632. Its totient is φ = 5329099776.

The previous prime is 13957864619. The next prime is 13957864673. The reversal of 13957864640 is 4646875931.

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, 4024187 + ... + 4027653.

Almost surely, 2^13957864640 is an apocalyptic number.

13957864640 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 13957864640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17377842816).

13957864640 is an abundant number, since it is smaller than the sum of its proper divisors (20797820992).

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

13957864640 is a wasteful number, since it uses less digits than its factorization.

13957864640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4054 (or 4044 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 53.

The spelling of 13957864640 in words is "thirteen billion, nine hundred fifty-seven million, eight hundred sixty-four thousand, six hundred forty".