14004660021 has 32 divisors (see below), whose sum is σ = 20805258240. Its totient is φ = 8307734400.

The previous prime is 14004660013. The next prime is 14004660023. The reversal of 14004660021 is 12006640041.

It is not a de Polignac number, because 14004660021 - 2³ = 14004660013 is a prime.

It is a super-2 number, since 2×14004660021² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 14004659973 and 14004660000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14004660023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 438216 + ... + 469086.

It is an arithmetic number, because the mean of its divisors is an integer number (650164320).

Almost surely, 2^14004660021 is an apocalyptic number.

14004660021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

14004660021 is a deficient number, since it is larger than the sum of its proper divisors (6800598219).

14004660021 is a wasteful number, since it uses less digits than its factorization.

14004660021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31177.

The product of its (nonzero) digits is 1152, while the sum is 24.

The spelling of 14004660021 in words is "fourteen billion, four million, six hundred sixty thousand, twenty-one".