77032317500 has 120 divisors (see below), whose sum is σ = 180332275200. Its totient is φ = 28695384000.

The previous prime is 77032317469. The next prime is 77032317503. The reversal of 77032317500 is 571323077.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77032317503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2788757 + ... + 2816243.

It is an arithmetic number, because the mean of its divisors is an integer number (1502768960).

Almost surely, 2^77032317500 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 77032317500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90166137600).

77032317500 is an abundant number, since it is smaller than the sum of its proper divisors (103299957700).

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

77032317500 is a wasteful number, since it uses less digits than its factorization.

77032317500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27589 (or 27572 counting only the distinct ones).

The product of its (nonzero) digits is 30870, while the sum is 35.

The spelling of 77032317500 in words is "seventy-seven billion, thirty-two million, three hundred seventeen thousand, five hundred".