76734287856 has 120 divisors (see below), whose sum is σ = 219006848736. Its totient is φ = 25071920640.

The previous prime is 76734287837. The next prime is 76734287869. The reversal of 76734287856 is 65878243767.

76734287856 is a `hidden beast` number, since 76 + 73 + 428 + 78 + 5 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 76734287793 and 76734287802.

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, 9329826 + ... + 9338046.

Almost surely, 2^76734287856 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 76734287856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109503424368).

76734287856 is an abundant number, since it is smaller than the sum of its proper divisors (142272560880).

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

76734287856 is a wasteful number, since it uses less digits than its factorization.

76734287856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9511 (or 9502 counting only the distinct ones).

The product of its digits is 94832640, while the sum is 63.

The spelling of 76734287856 in words is "seventy-six billion, seven hundred thirty-four million, two hundred eighty-seven thousand, eight hundred fifty-six".