23523402002081 has 2 divisors, whose sum is σ = 23523402002082. Its totient is φ = 23523402002080.

The previous prime is 23523402002011. The next prime is 23523402002083. The reversal of 23523402002081 is 18020020432532.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16219274163856 + 7304127838225 = 4027316^2 + 2702615^2 .

It is a cyclic number.

It is not a de Polignac number, because 23523402002081 - 2⁴² = 19125355490977 is a prime.

It is a super-2 number, since 2×23523402002081² (a number of 28 digits) contains 22 as substring.

Together with 23523402002083, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23523402002083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11761701001040 + 11761701001041.

It is an arithmetic number, because the mean of its divisors is an integer number (11761701001041).

Almost surely, 2^{23523402002081} is an apocalyptic number.

It is an amenable number.

23523402002081 is a deficient number, since it is larger than the sum of its proper divisors (1).

23523402002081 is an equidigital number, since it uses as much as digits as its factorization.

23523402002081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 32.

The spelling of 23523402002081 in words is "twenty-three trillion, five hundred twenty-three billion, four hundred two million, two thousand, eighty-one".