23885317526509 has 2 divisors, whose sum is σ = 23885317526510. Its totient is φ = 23885317526508.

The previous prime is 23885317526503. The next prime is 23885317526611. The reversal of 23885317526509 is 90562571358832.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20482159621284 + 3403157905225 = 4525722^2 + 1844765^2 .

It is a cyclic number.

It is not a de Polignac number, because 23885317526509 - 2¹¹ = 23885317524461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23885317526503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11942658763254 + 11942658763255.

It is an arithmetic number, because the mean of its divisors is an integer number (11942658763255).

Almost surely, 2^{23885317526509} is an apocalyptic number.

It is an amenable number.

23885317526509 is a deficient number, since it is larger than the sum of its proper divisors (1).

23885317526509 is an equidigital number, since it uses as much as digits as its factorization.

23885317526509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864000, while the sum is 64.

The spelling of 23885317526509 in words is "twenty-three trillion, eight hundred eighty-five billion, three hundred seventeen million, five hundred twenty-six thousand, five hundred nine".