23021411993 has 2 divisors, whose sum is σ = 23021411994. Its totient is φ = 23021411992.

The previous prime is 23021411977. The next prime is 23021412049. The reversal of 23021411993 is 39911412032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22918023769 + 103388224 = 151387^2 + 10168^2 .

It is a cyclic number.

It is not a de Polignac number, because 23021411993 - 2⁴ = 23021411977 is a prime.

It is not a weakly prime, because it can be changed into another prime (23021411953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11510705996 + 11510705997.

It is an arithmetic number, because the mean of its divisors is an integer number (11510705997).

Almost surely, 2^23021411993 is an apocalyptic number.

It is an amenable number.

23021411993 is a deficient number, since it is larger than the sum of its proper divisors (1).

23021411993 is an equidigital number, since it uses as much as digits as its factorization.

23021411993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 35.

The spelling of 23021411993 in words is "twenty-three billion, twenty-one million, four hundred eleven thousand, nine hundred ninety-three".