768537728641 has 8 divisors (see below), whose sum is σ = 819227427200. Its totient is φ = 718872064560.

The previous prime is 768537728639. The next prime is 768537728657. The reversal of 768537728641 is 146827735867.

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

It is a cyclic number.

It is not a de Polignac number, because 768537728641 - 2¹ = 768537728639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (768537720641) 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, 256007070 + ... + 256010071.

It is an arithmetic number, because the mean of its divisors is an integer number (102403428400).

Almost surely, 2^768537728641 is an apocalyptic number.

It is an amenable number.

768537728641 is a deficient number, since it is larger than the sum of its proper divisors (50689698559).

768537728641 is a wasteful number, since it uses less digits than its factorization.

768537728641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512017239.

The product of its digits is 94832640, while the sum is 64.

The spelling of 768537728641 in words is "seven hundred sixty-eight billion, five hundred thirty-seven million, seven hundred twenty-eight thousand, six hundred forty-one".