22646376397 has 4 divisors (see below), whose sum is σ = 22677021760. Its totient is φ = 22615731036.

The previous prime is 22646376383. The next prime is 22646376409. The reversal of 22646376397 is 79367364622.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22646376397 - 2²³ = 22637987789 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 (22646376367) 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, 15321573 + ... + 15323050.

It is an arithmetic number, because the mean of its divisors is an integer number (5669255440).

Almost surely, 2^22646376397 is an apocalyptic number.

It is an amenable number.

22646376397 is a deficient number, since it is larger than the sum of its proper divisors (30645363).

22646376397 is an equidigital number, since it uses as much as digits as its factorization.

22646376397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30645362.

The product of its digits is 13716864, while the sum is 55.

The spelling of 22646376397 in words is "twenty-two billion, six hundred forty-six million, three hundred seventy-six thousand, three hundred ninety-seven".