77831351752 has 96 divisors (see below), whose sum is σ = 183449347200. Its totient is φ = 30302807040.

The previous prime is 77831351737. The next prime is 77831351779. The reversal of 77831351752 is 25715313877.

It is a junction number, because it is equal to n+sod(n) for n = 77831351696 and 77831351705.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12729048 + ... + 12735160.

It is an arithmetic number, because the mean of its divisors is an integer number (1910930700).

Almost surely, 2^77831351752 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 77831351752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91724673600).

77831351752 is an abundant number, since it is smaller than the sum of its proper divisors (105617995448).

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

77831351752 is a wasteful number, since it uses less digits than its factorization.

77831351752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8027 (or 8012 counting only the distinct ones).

The product of its digits is 1234800, while the sum is 49.

The spelling of 77831351752 in words is "seventy-seven billion, eight hundred thirty-one million, three hundred fifty-one thousand, seven hundred fifty-two".