77995064818 has 16 divisors (see below), whose sum is σ = 127633553280. Its totient is φ = 35450839600.

The previous prime is 77995064783. The next prime is 77995064867. The reversal of 77995064818 is 81846059977.

It is a self number, because there is not a number n which added to its sum of digits gives 77995064818.

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, 616968 + ... + 732556.

It is an arithmetic number, because the mean of its divisors is an integer number (7977097080).

Almost surely, 2^77995064818 is an apocalyptic number.

77995064818 is a deficient number, since it is larger than the sum of its proper divisors (49638488462).

77995064818 is a wasteful number, since it uses less digits than its factorization.

77995064818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146273.

The product of its (nonzero) digits is 30481920, while the sum is 64.

The spelling of 77995064818 in words is "seventy-seven billion, nine hundred ninety-five million, sixty-four thousand, eight hundred eighteen".