77071733316 has 18 divisors (see below), whose sum is σ = 194820214862. Its totient is φ = 25690577760.

The previous prime is 77071733309. The next prime is 77071733317. The reversal of 77071733316 is 61333717077.

It can be written as a sum of positive squares in only one way, i.e., 46500609600 + 30571123716 = 215640^2 + 174846^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (77071733317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1070440705 + ... + 1070440776.

Almost surely, 2^77071733316 is an apocalyptic number.

It is an amenable number.

77071733316 is an abundant number, since it is smaller than the sum of its proper divisors (117748481546).

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

77071733316 is a wasteful number, since it uses less digits than its factorization.

77071733316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2140881491 (or 2140881486 counting only the distinct ones).

The product of its (nonzero) digits is 388962, while the sum is 45.

The spelling of 77071733316 in words is "seventy-seven billion, seventy-one million, seven hundred thirty-three thousand, three hundred sixteen".