764380340385 has 16 divisors (see below), whose sum is σ = 1262460433920. Its totient is φ = 394518885120.

The previous prime is 764380340371. The next prime is 764380340387. The reversal of 764380340385 is 583043083467.

It is not a de Polignac number, because 764380340385 - 2⁷ = 764380340257 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (764380340387) 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, 821913880 + ... + 821914809.

It is an arithmetic number, because the mean of its divisors is an integer number (78903777120).

Almost surely, 2^764380340385 is an apocalyptic number.

It is an amenable number.

764380340385 is a deficient number, since it is larger than the sum of its proper divisors (498080093535).

764380340385 is a wasteful number, since it uses less digits than its factorization.

764380340385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1643828728.

The product of its (nonzero) digits is 5806080, while the sum is 51.

The spelling of 764380340385 in words is "seven hundred sixty-four billion, three hundred eighty million, three hundred forty thousand, three hundred eighty-five".