264846206021 has 2 divisors, whose sum is σ = 264846206022. Its totient is φ = 264846206020.

The previous prime is 264846206011. The next prime is 264846206029. The reversal of 264846206021 is 120602648462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 164097097921 + 100749108100 = 405089^2 + 317410^2 .

It is a cyclic number.

It is not a de Polignac number, because 264846206021 - 2⁶ = 264846205957 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 264846206021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (264846206029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132423103010 + 132423103011.

It is an arithmetic number, because the mean of its divisors is an integer number (132423103011).

Almost surely, 2^264846206021 is an apocalyptic number.

It is an amenable number.

264846206021 is a deficient number, since it is larger than the sum of its proper divisors (1).

264846206021 is an equidigital number, since it uses as much as digits as its factorization.

264846206021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 221184, while the sum is 41.

The spelling of 264846206021 in words is "two hundred sixty-four billion, eight hundred forty-six million, two hundred six thousand, twenty-one".