768844351613 has 32 divisors (see below), whose sum is σ = 845570756352. Its totient is φ = 694801152000.

The previous prime is 768844351589. The next prime is 768844351663. The reversal of 768844351613 is 316153448867.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 768844351613 - 2³⁰ = 767770609789 is a prime.

It is a super-2 number, since 2×768844351613² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (768844351663) 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 31 ways as a sum of consecutive naturals, for example, 194987720 + ... + 194991662.

It is an arithmetic number, because the mean of its divisors is an integer number (26424086136).

Almost surely, 2^768844351613 is an apocalyptic number.

It is an amenable number.

768844351613 is a deficient number, since it is larger than the sum of its proper divisors (76726404739).

768844351613 is a wasteful number, since it uses less digits than its factorization.

768844351613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5685.

The product of its digits is 11612160, while the sum is 56.

The spelling of 768844351613 in words is "seven hundred sixty-eight billion, eight hundred forty-four million, three hundred fifty-one thousand, six hundred thirteen".