76857689424 has 120 divisors (see below), whose sum is σ = 206069774976. Its totient is φ = 24682944000.

The previous prime is 76857689383. The next prime is 76857689501. The reversal of 76857689424 is 42498675867.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10744249 + ... + 10751399.

Almost surely, 2^76857689424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 76857689424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103034887488).

76857689424 is an abundant number, since it is smaller than the sum of its proper divisors (129212085552).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

76857689424 is a wasteful number, since it uses less digits than its factorization.

76857689424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7457 (or 7420 counting only the distinct ones).

The product of its digits is 162570240, while the sum is 66.

The spelling of 76857689424 in words is "seventy-six billion, eight hundred fifty-seven million, six hundred eighty-nine thousand, four hundred twenty-four".