13991423040 has 168 divisors, whose sum is σ = 54999696960. Its totient is φ = 3198034944.

The previous prime is 13991422987. The next prime is 13991423057. The reversal of 13991423040 is 4032419931.

It is a tau number, because it is divible by the number of its divisors (168).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 13991422986 and 13991423004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 326850 + ... + 367169.

Almost surely, 2^13991423040 is an apocalyptic number.

13991423040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13991423040 is an abundant number, since it is smaller than the sum of its proper divisors (41008273920).

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

13991423040 is a wasteful number, since it uses less digits than its factorization.

13991423040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694049 (or 694036 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The spelling of 13991423040 in words is "thirteen billion, nine hundred ninety-one million, four hundred twenty-three thousand, forty".