21962025373 has 4 divisors (see below), whose sum is σ = 22043668860. Its totient is φ = 21880381888.

The previous prime is 21962025367. The next prime is 21962025413. The reversal of 21962025373 is 37352026912.

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 9211776484 + 12750248889 = 95978^2 + 112917^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21962025373 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 (21962025313) 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, 40821340 + ... + 40821877.

It is an arithmetic number, because the mean of its divisors is an integer number (5510917215).

Almost surely, 2^21962025373 is an apocalyptic number.

It is an amenable number.

21962025373 is a deficient number, since it is larger than the sum of its proper divisors (81643487).

21962025373 is an equidigital number, since it uses as much as digits as its factorization.

21962025373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81643486.

The product of its (nonzero) digits is 136080, while the sum is 40.

The spelling of 21962025373 in words is "twenty-one billion, nine hundred sixty-two million, twenty-five thousand, three hundred seventy-three".