77433116287 has 6 divisors (see below), whose sum is σ = 81723040008. Its totient is φ = 73357688772.

The previous prime is 77433116273. The next prime is 77433116309. The reversal of 77433116287 is 78261133477.

It is a de Polignac number, because none of the positive numbers 2^k-77433116287 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 77433116287.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77433116207) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 107247723 + ... + 107248444.

It is an arithmetic number, because the mean of its divisors is an integer number (13620506668).

Almost surely, 2^77433116287 is an apocalyptic number.

77433116287 is a deficient number, since it is larger than the sum of its proper divisors (4289923721).

77433116287 is a wasteful number, since it uses less digits than its factorization.

77433116287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214496205 (or 214496186 counting only the distinct ones).

The product of its digits is 1185408, while the sum is 49.

The spelling of 77433116287 in words is "seventy-seven billion, four hundred thirty-three million, one hundred sixteen thousand, two hundred eighty-seven".