768971129521 has 8 divisors (see below), whose sum is σ = 879131774720. Its totient is φ = 658887391008.

The previous prime is 768971129513. The next prime is 768971129573. The reversal of 768971129521 is 125921179867.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 768971129521 - 2³ = 768971129513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (768971129581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19205241 + ... + 19245238.

It is an arithmetic number, because the mean of its divisors is an integer number (109891471840).

Almost surely, 2^768971129521 is an apocalyptic number.

It is an amenable number.

768971129521 is a deficient number, since it is larger than the sum of its proper divisors (110160645199).

768971129521 is a wasteful number, since it uses less digits than its factorization.

768971129521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38453343.

The product of its digits is 3810240, while the sum is 58.

The spelling of 768971129521 in words is "seven hundred sixty-eight billion, nine hundred seventy-one million, one hundred twenty-nine thousand, five hundred twenty-one".