246828664921 has 2 divisors, whose sum is σ = 246828664922. Its totient is φ = 246828664920.

The previous prime is 246828664879. The next prime is 246828665009. The reversal of 246828664921 is 129466828642.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 143039022025 + 103789642896 = 378205^2 + 322164^2 .

It is a cyclic number.

It is not a de Polignac number, because 246828664921 - 2⁹ = 246828664409 is a prime.

It is not a weakly prime, because it can be changed into another prime (246828664321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123414332460 + 123414332461.

It is an arithmetic number, because the mean of its divisors is an integer number (123414332461).

Almost surely, 2^246828664921 is an apocalyptic number.

It is an amenable number.

246828664921 is a deficient number, since it is larger than the sum of its proper divisors (1).

246828664921 is an equidigital number, since it uses as much as digits as its factorization.

246828664921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15925248, while the sum is 58.

The spelling of 246828664921 in words is "two hundred forty-six billion, eight hundred twenty-eight million, six hundred sixty-four thousand, nine hundred twenty-one".