77484075816 has 64 divisors (see below), whose sum is σ = 221404377600. Its totient is φ = 22136177088.

The previous prime is 77484075751. The next prime is 77484075817. The reversal of 77484075816 is 61857048477.

It is not an unprimeable number, because it can be changed into a prime (77484075817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2775415 + ... + 2803193.

It is an arithmetic number, because the mean of its divisors is an integer number (3459443400).

Almost surely, 2^77484075816 is an apocalyptic number.

It is an amenable number.

77484075816 is an abundant number, since it is smaller than the sum of its proper divisors (143920301784).

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

77484075816 is a wasteful number, since it uses less digits than its factorization.

77484075816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44398 (or 44394 counting only the distinct ones).

The product of its (nonzero) digits is 10536960, while the sum is 57.

The spelling of 77484075816 in words is "seventy-seven billion, four hundred eighty-four million, seventy-five thousand, eight hundred sixteen".