77145113808 has 120 divisors (see below), whose sum is σ = 249185229696. Its totient is φ = 21823200000.

The previous prime is 77145113789. The next prime is 77145113821. The reversal of 77145113808 is 80831154177.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 277068 + ... + 480683.

Almost surely, 2^77145113808 is an apocalyptic number.

It is an amenable number.

77145113808 is an abundant number, since it is smaller than the sum of its proper divisors (172040115888).

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

77145113808 is a wasteful number, since it uses less digits than its factorization.

77145113808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 757873 (or 757864 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 45.

The spelling of 77145113808 in words is "seventy-seven billion, one hundred forty-five million, one hundred thirteen thousand, eight hundred eight".