21792534373 has 4 divisors (see below), whose sum is σ = 21793036140. Its totient is φ = 21792032608.

The previous prime is 21792534347. The next prime is 21792534419. The reversal of 21792534373 is 37343529712.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5555913444 + 16236620929 = 74538^2 + 127423^2 .

It is a cyclic number.

It is not a de Polignac number, because 21792534373 - 2⁵ = 21792534341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21792534773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178840 + ... + 274897.

It is an arithmetic number, because the mean of its divisors is an integer number (5448259035).

Almost surely, 2^21792534373 is an apocalyptic number.

It is an amenable number.

21792534373 is a deficient number, since it is larger than the sum of its proper divisors (501767).

21792534373 is an equidigital number, since it uses as much as digits as its factorization.

21792534373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501766.

The product of its digits is 952560, while the sum is 46.

The spelling of 21792534373 in words is "twenty-one billion, seven hundred ninety-two million, five hundred thirty-four thousand, three hundred seventy-three".