766734978464 has 96 divisors (see below), whose sum is σ = 1858087921536. Its totient is φ = 303286164480.

The previous prime is 766734978461. The next prime is 766734978487. The reversal of 766734978464 is 464879437667.

It is not an unprimeable number, because it can be changed into a prime (766734978461) 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 15 ways as a sum of consecutive naturals, for example, 42846959 + ... + 42864849.

It is an arithmetic number, because the mean of its divisors is an integer number (19355082516).

Almost surely, 2^766734978464 is an apocalyptic number.

It is an amenable number.

766734978464 is an abundant number, since it is smaller than the sum of its proper divisors (1091352943072).

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

766734978464 is a wasteful number, since it uses less digits than its factorization.

766734978464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32638 (or 32630 counting only the distinct ones).

The product of its digits is 1024192512, while the sum is 71.

The spelling of 766734978464 in words is "seven hundred sixty-six billion, seven hundred thirty-four million, nine hundred seventy-eight thousand, four hundred sixty-four".