77523832576 has 72 divisors (see below), whose sum is σ = 159718487040. Its totient is φ = 37535714304.

The previous prime is 77523832571. The next prime is 77523832579. The reversal of 77523832576 is 67523832577.

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77523832571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 973665 + ... + 1050271.

It is an arithmetic number, because the mean of its divisors is an integer number (2218312320).

Almost surely, 2^77523832576 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 77523832576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79859243520).

77523832576 is an abundant number, since it is smaller than the sum of its proper divisors (82194654464).

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

77523832576 is an equidigital number, since it uses as much as digits as its factorization.

77523832576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76749 (or 76735 counting only the distinct ones).

The product of its digits is 14817600, while the sum is 55.

Subtracting from 77523832576 its reverse (67523832577), we obtain a palindrome (9999999999).

The spelling of 77523832576 in words is "seventy-seven billion, five hundred twenty-three million, eight hundred thirty-two thousand, five hundred seventy-six".