766435260401 has 2 divisors, whose sum is σ = 766435260402. Its totient is φ = 766435260400.

The previous prime is 766435260361. The next prime is 766435260419. The reversal of 766435260401 is 104062534667.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 732352562176 + 34082698225 = 855776^2 + 184615^2 .

It is a cyclic number.

It is not a de Polignac number, because 766435260401 - 2⁶ = 766435260337 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 (766435260421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 383217630200 + 383217630201.

It is an arithmetic number, because the mean of its divisors is an integer number (383217630201).

Almost surely, 2^766435260401 is an apocalyptic number.

It is an amenable number.

766435260401 is a deficient number, since it is larger than the sum of its proper divisors (1).

766435260401 is an equidigital number, since it uses as much as digits as its factorization.

766435260401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 725760, while the sum is 44.

The spelling of 766435260401 in words is "seven hundred sixty-six billion, four hundred thirty-five million, two hundred sixty thousand, four hundred one".