764140402313 has 4 divisors (see below), whose sum is σ = 772726249620. Its totient is φ = 755554555008.

The previous prime is 764140402243. The next prime is 764140402321. The reversal of 764140402313 is 313204041467.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 313204041467 = 5641 ⋅55522787.

It can be written as a sum of positive squares in 2 ways, for example, as 105945693049 + 658194709264 = 325493^2 + 811292^2 .

It is a cyclic number.

It is not a de Polignac number, because 764140402313 - 2²² = 764136208009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (764140402213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4292923520 + ... + 4292923697.

It is an arithmetic number, because the mean of its divisors is an integer number (193181562405).

Almost surely, 2^764140402313 is an apocalyptic number.

It is an amenable number.

764140402313 is a deficient number, since it is larger than the sum of its proper divisors (8585847307).

764140402313 is an equidigital number, since it uses as much as digits as its factorization.

764140402313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8585847306.

The product of its (nonzero) digits is 48384, while the sum is 35.

The spelling of 764140402313 in words is "seven hundred sixty-four billion, one hundred forty million, four hundred two thousand, three hundred thirteen".