262379764649 has 2 divisors, whose sum is σ = 262379764650. Its totient is φ = 262379764648.

The previous prime is 262379764607. The next prime is 262379764663. The reversal of 262379764649 is 946467973262.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 210343311424 + 52036453225 = 458632^2 + 228115^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-262379764649 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (262379464649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131189882324 + 131189882325.

It is an arithmetic number, because the mean of its divisors is an integer number (131189882325).

Almost surely, 2^262379764649 is an apocalyptic number.

It is an amenable number.

262379764649 is a deficient number, since it is larger than the sum of its proper divisors (1).

262379764649 is an equidigital number, since it uses as much as digits as its factorization.

262379764649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 164602368, while the sum is 65.

The spelling of 262379764649 in words is "two hundred sixty-two billion, three hundred seventy-nine million, seven hundred sixty-four thousand, six hundred forty-nine".