13990919640 has 32 divisors (see below), whose sum is σ = 41972759280. Its totient is φ = 3730911872.

The previous prime is 13990919617. The next prime is 13990919689. The reversal of 13990919640 is 4691909931.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58295379 + ... + 58295618.

Almost surely, 2^13990919640 is an apocalyptic number.

13990919640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13990919640 is an abundant number, since it is smaller than the sum of its proper divisors (27981839640).

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

13990919640 is a wasteful number, since it uses less digits than its factorization.

13990919640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116591011 (or 116591007 counting only the distinct ones).

The product of its (nonzero) digits is 472392, while the sum is 51.

The spelling of 13990919640 in words is "thirteen billion, nine hundred ninety million, nine hundred nineteen thousand, six hundred forty".