764408133568 has 28 divisors (see below), whose sum is σ = 1518505309440. Its totient is φ = 381792622592.

The previous prime is 764408133563. The next prime is 764408133583. The reversal of 764408133568 is 865331804467.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (764408133563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6368896 + ... + 6487807.

It is an arithmetic number, because the mean of its divisors is an integer number (54232332480).

Almost surely, 2^764408133568 is an apocalyptic number.

It is an amenable number.

764408133568 is a deficient number, since it is larger than the sum of its proper divisors (754097175872).

764408133568 is a wasteful number, since it uses less digits than its factorization.

764408133568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12857644 (or 12857634 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 55.

The spelling of 764408133568 in words is "seven hundred sixty-four billion, four hundred eight million, one hundred thirty-three thousand, five hundred sixty-eight".