21295009683 has 6 divisors (see below), whose sum is σ = 30759458444. Its totient is φ = 14196673116.

The previous prime is 21295009679. The next prime is 21295009717. The reversal of 21295009683 is 38690059212.

It is not a de Polignac number, because 21295009683 - 2² = 21295009679 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21295009643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1183056085 + ... + 1183056102.

Almost surely, 2^21295009683 is an apocalyptic number.

21295009683 is a deficient number, since it is larger than the sum of its proper divisors (9464448761).

21295009683 is a wasteful number, since it uses less digits than its factorization.

21295009683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2366112193 (or 2366112190 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The spelling of 21295009683 in words is "twenty-one billion, two hundred ninety-five million, nine thousand, six hundred eighty-three".