76893639868 has 24 divisors (see below), whose sum is σ = 136384915968. Its totient is φ = 37927880496.

The previous prime is 76893639841. The next prime is 76893639887. The reversal of 76893639868 is 86893639867.

It is a self number, because there is not a number n which added to its sum of digits gives 76893639868.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57205 + ... + 396307.

It is an arithmetic number, because the mean of its divisors is an integer number (5682704832).

Almost surely, 2^76893639868 is an apocalyptic number.

It is an amenable number.

76893639868 is a deficient number, since it is larger than the sum of its proper divisors (59491276100).

76893639868 is a wasteful number, since it uses less digits than its factorization.

76893639868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339873 (or 339871 counting only the distinct ones).

The product of its digits is 564350976, while the sum is 73.

Subtracting 76893639868 from its reverse (86893639867), we obtain a palindrome (9999999999).

The spelling of 76893639868 in words is "seventy-six billion, eight hundred ninety-three million, six hundred thirty-nine thousand, eight hundred sixty-eight".