764255720747136 has 64 divisors (see below), whose sum is σ = 2033443331064000. Its totient is φ = 254326611502080.

The previous prime is 764255720747083. The next prime is 764255720747147. The reversal of 764255720747136 is 631747027552467.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1661079895 + ... + 1661539926.

It is an arithmetic number, because the mean of its divisors is an integer number (31772552047875).

Almost surely, 2^{764255720747136} is an apocalyptic number.

It is an amenable number.

764255720747136 is an abundant number, since it is smaller than the sum of its proper divisors (1269187610316864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

764255720747136 is a wasteful number, since it uses less digits than its factorization.

764255720747136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3322620437 (or 3322620425 counting only the distinct ones).

The product of its (nonzero) digits is 414892800, while the sum is 66.

The spelling of 764255720747136 in words is "seven hundred sixty-four trillion, two hundred fifty-five billion, seven hundred twenty million, seven hundred forty-seven thousand, one hundred thirty-six".