14004000640 has 64 divisors (see below), whose sum is σ = 38260942560. Its totient is φ = 4801370112.

The previous prime is 14004000623. The next prime is 14004000697. The reversal of 14004000640 is 4600040041.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×14004000640² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 1558467 + ... + 1567426.

Almost surely, 2^14004000640 is an apocalyptic number.

14004000640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

14004000640 is an abundant number, since it is smaller than the sum of its proper divisors (24256941920).

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

14004000640 is an equidigital number, since it uses as much as digits as its factorization.

14004000640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3125919 (or 3125907 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 14004000640 its reverse (4600040041), we get a palindrome (18604040681).

The spelling of 14004000640 in words is "fourteen billion, four million, six hundred forty", and thus it is an aban number.