764380156655 has 16 divisors (see below), whose sum is σ = 939942360000. Its totient is φ = 596389981440.

The previous prime is 764380156651. The next prime is 764380156667. The reversal of 764380156655 is 556651083467.

It is not a de Polignac number, because 764380156655 - 2² = 764380156651 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 764380156655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (764380156651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6860 + ... + 1236449.

It is an arithmetic number, because the mean of its divisors is an integer number (58746397500).

Almost surely, 2^764380156655 is an apocalyptic number.

764380156655 is a deficient number, since it is larger than the sum of its proper divisors (175562203345).

764380156655 is a wasteful number, since it uses less digits than its factorization.

764380156655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1246354.

The product of its (nonzero) digits is 18144000, while the sum is 56.

The spelling of 764380156655 in words is "seven hundred sixty-four billion, three hundred eighty million, one hundred fifty-six thousand, six hundred fifty-five".