264882378641 has 2 divisors, whose sum is σ = 264882378642. Its totient is φ = 264882378640.

The previous prime is 264882378623. The next prime is 264882378689. The reversal of 264882378641 is 146873288462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 245000250625 + 19882128016 = 494975^2 + 141004^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-264882378641 is a prime.

It is not a weakly prime, because it can be changed into another prime (264882978641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132441189320 + 132441189321.

It is an arithmetic number, because the mean of its divisors is an integer number (132441189321).

Almost surely, 2^264882378641 is an apocalyptic number.

It is an amenable number.

264882378641 is a deficient number, since it is larger than the sum of its proper divisors (1).

264882378641 is an equidigital number, since it uses as much as digits as its factorization.

264882378641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24772608, while the sum is 59.

The spelling of 264882378641 in words is "two hundred sixty-four billion, eight hundred eighty-two million, three hundred seventy-eight thousand, six hundred forty-one".