21914919313 has 8 divisors (see below), whose sum is σ = 25578508032. Its totient is φ = 18384552096.

The previous prime is 21914919293. The next prime is 21914919337. The reversal of 21914919313 is 31391941912.

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

It is a cyclic number.

It is not a de Polignac number, because 21914919313 - 2²⁹ = 21378048401 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21914919313.

It is not an unprimeable number, because it can be changed into a prime (21914919413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33305020 + ... + 33305677.

It is an arithmetic number, because the mean of its divisors is an integer number (3197313504).

Almost surely, 2^21914919313 is an apocalyptic number.

It is an amenable number.

21914919313 is a deficient number, since it is larger than the sum of its proper divisors (3663588719).

21914919313 is an equidigital number, since it uses as much as digits as its factorization.

21914919313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66610751.

The product of its digits is 52488, while the sum is 43.

The spelling of 21914919313 in words is "twenty-one billion, nine hundred fourteen million, nine hundred nineteen thousand, three hundred thirteen".