262723668491 has 2 divisors, whose sum is σ = 262723668492. Its totient is φ = 262723668490.

The previous prime is 262723668451. The next prime is 262723668539. The reversal of 262723668491 is 194866327262.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 262723668491 - 2¹⁸ = 262723406347 is a prime.

It is not a weakly prime, because it can be changed into another prime (262723668451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131361834245 + 131361834246.

It is an arithmetic number, because the mean of its divisors is an integer number (131361834246).

Almost surely, 2^262723668491 is an apocalyptic number.

262723668491 is a deficient number, since it is larger than the sum of its proper divisors (1).

262723668491 is an equidigital number, since it uses as much as digits as its factorization.

262723668491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10450944, while the sum is 56.

The spelling of 262723668491 in words is "two hundred sixty-two billion, seven hundred twenty-three million, six hundred sixty-eight thousand, four hundred ninety-one".