21307512014 has 8 divisors (see below), whose sum is σ = 31965282720. Its totient is φ = 10652417776.

The previous prime is 21307511947. The next prime is 21307512029. The reversal of 21307512014 is 41021570312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 649094 + ... + 681129.

It is an arithmetic number, because the mean of its divisors is an integer number (3995660340).

Almost surely, 2^21307512014 is an apocalyptic number.

21307512014 is a deficient number, since it is larger than the sum of its proper divisors (10657770706).

21307512014 is a wasteful number, since it uses less digits than its factorization.

21307512014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1338234.

The product of its (nonzero) digits is 1680, while the sum is 26.

The spelling of 21307512014 in words is "twenty-one billion, three hundred seven million, five hundred twelve thousand, fourteen".