22634525640997 has 4 divisors (see below), whose sum is σ = 22634536204876. Its totient is φ = 22634515077120.

The previous prime is 22634525640977. The next prime is 22634525641043. The reversal of 22634525640997 is 79904652543622.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 16119213235876 + 6515312405121 = 4014874^2 + 2552511^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22634525640997 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 (22634525640907) 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, 800658 + ... + 6775699.

It is an arithmetic number, because the mean of its divisors is an integer number (5658634051219).

Almost surely, 2^{22634525640997} is an apocalyptic number.

It is an amenable number.

22634525640997 is a deficient number, since it is larger than the sum of its proper divisors (10563879).

22634525640997 is an equidigital number, since it uses as much as digits as its factorization.

22634525640997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10563878.

The product of its (nonzero) digits is 195955200, while the sum is 64.

The spelling of 22634525640997 in words is "twenty-two trillion, six hundred thirty-four billion, five hundred twenty-five million, six hundred forty thousand, nine hundred ninety-seven".