23323643641 has 2 divisors, whose sum is σ = 23323643642. Its totient is φ = 23323643640.

The previous prime is 23323643627. The next prime is 23323643647. The reversal of 23323643641 is 14634632332.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23262350400 + 61293241 = 152520^2 + 7829^2 .

It is a cyclic number.

It is not a de Polignac number, because 23323643641 - 2⁷ = 23323643513 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23323643641.

It is not a weakly prime, because it can be changed into another prime (23323643647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11661821820 + 11661821821.

It is an arithmetic number, because the mean of its divisors is an integer number (11661821821).

Almost surely, 2^23323643641 is an apocalyptic number.

It is an amenable number.

23323643641 is a deficient number, since it is larger than the sum of its proper divisors (1).

23323643641 is an equidigital number, since it uses as much as digits as its factorization.

23323643641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 37.

The spelling of 23323643641 in words is "twenty-three billion, three hundred twenty-three million, six hundred forty-three thousand, six hundred forty-one".