764122977901 has 2 divisors, whose sum is σ = 764122977902. Its totient is φ = 764122977900.

The previous prime is 764122977859. The next prime is 764122977931. The reversal of 764122977901 is 109779221467.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 555995413801 + 208127564100 = 745651^2 + 456210^2 .

It is a cyclic number.

It is not a de Polignac number, because 764122977901 - 2⁹ = 764122977389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (764122977931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 382061488950 + 382061488951.

It is an arithmetic number, because the mean of its divisors is an integer number (382061488951).

Almost surely, 2^764122977901 is an apocalyptic number.

It is an amenable number.

764122977901 is a deficient number, since it is larger than the sum of its proper divisors (1).

764122977901 is an equidigital number, since it uses as much as digits as its factorization.

764122977901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2667168, while the sum is 55.

The spelling of 764122977901 in words is "seven hundred sixty-four billion, one hundred twenty-two million, nine hundred seventy-seven thousand, nine hundred one".