23352220397 has 24 divisors (see below), whose sum is σ = 25819082520. Its totient is φ = 21104899200.

The previous prime is 23352220387. The next prime is 23352220439. The reversal of 23352220397 is 79302225332.

It can be written as a sum of positive squares in 4 ways, for example, as 3406589956 + 19945630441 = 58366^2 + 141229^2 .

It is not a de Polignac number, because 23352220397 - 2²⁴ = 23335443181 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 23352220397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23352220327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19000379 + ... + 19001607.

It is an arithmetic number, because the mean of its divisors is an integer number (1075795105).

Almost surely, 2^23352220397 is an apocalyptic number.

It is an amenable number.

23352220397 is a deficient number, since it is larger than the sum of its proper divisors (2466862123).

23352220397 is a wasteful number, since it uses less digits than its factorization.

23352220397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2045 (or 2034 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 38.

The spelling of 23352220397 in words is "twenty-three billion, three hundred fifty-two million, two hundred twenty thousand, three hundred ninety-seven".