768971129522 has 18 divisors (see below), whose sum is σ = 1156869065079. Its totient is φ = 383351458560.

The previous prime is 768971129513. The next prime is 768971129573. The reversal of 768971129522 is 225921179867.

It can be written as a sum of positive squares in 5 ways, for example, as 435442934161 + 333528195361 = 659881^2 + 577519^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=620069.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 556821272 + ... + 556822652.

Almost surely, 2^768971129522 is an apocalyptic number.

768971129522 is a deficient number, since it is larger than the sum of its proper divisors (387897935557).

768971129522 is an frugal number, since it uses more digits than its factorization.

768971129522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3662 (or 1832 counting only the distinct ones).

The product of its digits is 7620480, while the sum is 59.

The spelling of 768971129522 in words is "seven hundred sixty-eight billion, nine hundred seventy-one million, one hundred twenty-nine thousand, five hundred twenty-two".