77543874616 has 16 divisors (see below), whose sum is σ = 156578977800. Its totient is φ = 35789480544.

The previous prime is 77543874601. The next prime is 77543874637. The reversal of 77543874616 is 61647834577.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 372806986 + ... + 372807193.

Almost surely, 2^77543874616 is an apocalyptic number.

It is an amenable number.

77543874616 is an abundant number, since it is smaller than the sum of its proper divisors (79035103184).

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

77543874616 is a wasteful number, since it uses less digits than its factorization.

77543874616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 745614198 (or 745614194 counting only the distinct ones).

The product of its digits is 23708160, while the sum is 58.

The spelling of 77543874616 in words is "seventy-seven billion, five hundred forty-three million, eight hundred seventy-four thousand, six hundred sixteen".