766477023457 has 2 divisors, whose sum is σ = 766477023458. Its totient is φ = 766477023456.

The previous prime is 766477023409. The next prime is 766477023493. The reversal of 766477023457 is 754320774667.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 429770713761 + 336706309696 = 655569^2 + 580264^2 .

It is an emirp because it is prime and its reverse (754320774667) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 766477023457 - 2⁷ = 766477023329 is a prime.

It is not a weakly prime, because it can be changed into another prime (766477023497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 383238511728 + 383238511729.

It is an arithmetic number, because the mean of its divisors is an integer number (383238511729).

Almost surely, 2^766477023457 is an apocalyptic number.

It is an amenable number.

766477023457 is a deficient number, since it is larger than the sum of its proper divisors (1).

766477023457 is an equidigital number, since it uses as much as digits as its factorization.

766477023457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41489280, while the sum is 58.

The spelling of 766477023457 in words is "seven hundred sixty-six billion, four hundred seventy-seven million, twenty-three thousand, four hundred fifty-seven".