77440485888 has 80 divisors (see below), whose sum is σ = 229229256960. Its totient is φ = 25813490688.

The previous prime is 77440485869. The next prime is 77440485929. The reversal of 77440485888 is 88858404477.

77440485888 is a `hidden beast` number, since 7 + 7 + 4 + 4 + 0 + 48 + 588 + 8 = 666.

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, 2787120 + ... + 2814767.

It is an arithmetic number, because the mean of its divisors is an integer number (2865365712).

Almost surely, 2^77440485888 is an apocalyptic number.

It is an amenable number.

77440485888 is an abundant number, since it is smaller than the sum of its proper divisors (151788771072).

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

77440485888 is an equidigital number, since it uses as much as digits as its factorization.

77440485888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5601914 (or 5601892 counting only the distinct ones).

The product of its (nonzero) digits is 64225280, while the sum is 63.

The spelling of 77440485888 in words is "seventy-seven billion, four hundred forty million, four hundred eighty-five thousand, eight hundred eighty-eight".