77418678832 has 60 divisors (see below), whose sum is σ = 165122356840. Its totient is φ = 35137428480.

The previous prime is 77418678829. The next prime is 77418678853. The reversal of 77418678832 is 23887681477.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1273219 + ... + 1332637.

Almost surely, 2^77418678832 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 77418678832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82561178420).

77418678832 is an abundant number, since it is smaller than the sum of its proper divisors (87703678008).

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

77418678832 is a wasteful number, since it uses less digits than its factorization.

77418678832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60122 (or 60105 counting only the distinct ones).

The product of its digits is 25288704, while the sum is 61.

The spelling of 77418678832 in words is "seventy-seven billion, four hundred eighteen million, six hundred seventy-eight thousand, eight hundred thirty-two".