23015356366021 has 2 divisors, whose sum is σ = 23015356366022. Its totient is φ = 23015356366020.

The previous prime is 23015356365983. The next prime is 23015356366043. The reversal of 23015356366021 is 12066365351032.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22845665921796 + 169690444225 = 4779714^2 + 411935^2 .

It is a cyclic number.

It is not a de Polignac number, because 23015356366021 - 2¹⁵ = 23015356333253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23015356366081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11507678183010 + 11507678183011.

It is an arithmetic number, because the mean of its divisors is an integer number (11507678183011).

Almost surely, 2^{23015356366021} is an apocalyptic number.

It is an amenable number.

23015356366021 is a deficient number, since it is larger than the sum of its proper divisors (1).

23015356366021 is an equidigital number, since it uses as much as digits as its factorization.

23015356366021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 583200, while the sum is 43.

The spelling of 23015356366021 in words is "twenty-three trillion, fifteen billion, three hundred fifty-six million, three hundred sixty-six thousand, twenty-one".