764741260511256 has 64 divisors (see below), whose sum is σ = 2185102138222080. Its totient is φ = 218484792184320.

The previous prime is 764741260511237. The next prime is 764741260511311. The reversal of 764741260511256 is 652115062147467.

It is a junction number, because it is equal to n+sod(n) for n = 764741260511196 and 764741260511205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129507681 + ... + 135283856.

It is an arithmetic number, because the mean of its divisors is an integer number (34142220909720).

Almost surely, 2^{764741260511256} is an apocalyptic number.

It is an amenable number.

764741260511256 is an abundant number, since it is smaller than the sum of its proper divisors (1420360877710824).

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

764741260511256 is a wasteful number, since it uses less digits than its factorization.

764741260511256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264808744 (or 264808740 counting only the distinct ones).

The product of its (nonzero) digits is 16934400, while the sum is 57.

The spelling of 764741260511256 in words is "seven hundred sixty-four trillion, seven hundred forty-one billion, two hundred sixty million, five hundred eleven thousand, two hundred fifty-six".