21900673297 has 8 divisors (see below), whose sum is σ = 21943364832. Its totient is φ = 21858009600.

The previous prime is 21900673243. The next prime is 21900673321. The reversal of 21900673297 is 79237600912.

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 21900673297 - 2¹⁹ = 21900149009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21900673217) by changing a digit.

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, 2232838 + ... + 2242624.

It is an arithmetic number, because the mean of its divisors is an integer number (2742920604).

Almost surely, 2^21900673297 is an apocalyptic number.

It is an amenable number.

21900673297 is a deficient number, since it is larger than the sum of its proper divisors (42691535).

21900673297 is an equidigital number, since it uses as much as digits as its factorization.

21900673297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13919.

The product of its (nonzero) digits is 285768, while the sum is 46.

The spelling of 21900673297 in words is "twenty-one billion, nine hundred million, six hundred seventy-three thousand, two hundred ninety-seven".