77614255808 has 56 divisors (see below), whose sum is σ = 162725252400. Its totient is φ = 36627821568.

The previous prime is 77614255787. The next prime is 77614255811. The reversal of 77614255808 is 80855241677.

It is a self number, because there is not a number n which added to its sum of digits gives 77614255808.

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, 208466 + ... + 445742.

Almost surely, 2^77614255808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77614255808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81362626200).

77614255808 is an abundant number, since it is smaller than the sum of its proper divisors (85110996592).

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

77614255808 is a wasteful number, since it uses less digits than its factorization.

77614255808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237577 (or 237567 counting only the distinct ones).

The product of its (nonzero) digits is 3763200, while the sum is 53.

The spelling of 77614255808 in words is "seventy-seven billion, six hundred fourteen million, two hundred fifty-five thousand, eight hundred eight".