77480871756 has 24 divisors (see below), whose sum is σ = 181985981184. Its totient is φ = 25655917200.

The previous prime is 77480871749. The next prime is 77480871823. The reversal of 77480871756 is 65717808477.

It is a self number, because there is not a number n which added to its sum of digits gives 77480871756.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21378120 + ... + 21381743.

It is an arithmetic number, because the mean of its divisors is an integer number (7582749216).

Almost surely, 2^77480871756 is an apocalyptic number.

It is an amenable number.

77480871756 is an abundant number, since it is smaller than the sum of its proper divisors (104505109428).

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

77480871756 is a wasteful number, since it uses less digits than its factorization.

77480871756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42760021 (or 42760019 counting only the distinct ones).

The product of its (nonzero) digits is 18439680, while the sum is 60.

The spelling of 77480871756 in words is "seventy-seven billion, four hundred eighty million, eight hundred seventy-one thousand, seven hundred fifty-six".