86258240921 has 2 divisors, whose sum is σ = 86258240922. Its totient is φ = 86258240920.

The previous prime is 86258240899. The next prime is 86258241031. The reversal of 86258240921 is 12904285268.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59185158400 + 27073082521 = 243280^2 + 164539^2 .

It is a cyclic number.

It is not a de Polignac number, because 86258240921 - 2¹⁸ = 86257978777 is a prime.

It is not a weakly prime, because it can be changed into another prime (86258240021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43129120460 + 43129120461.

It is an arithmetic number, because the mean of its divisors is an integer number (43129120461).

Almost surely, 2^86258240921 is an apocalyptic number.

It is an amenable number.

86258240921 is a deficient number, since it is larger than the sum of its proper divisors (1).

86258240921 is an equidigital number, since it uses as much as digits as its factorization.

86258240921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 552960, while the sum is 47.

The spelling of 86258240921 in words is "eighty-six billion, two hundred fifty-eight million, two hundred forty thousand, nine hundred twenty-one".