77315895008 has 192 divisors, whose sum is σ = 190087430400. Its totient is φ = 30486896640.

The previous prime is 77315894993. The next prime is 77315895031. The reversal of 77315895008 is 80059851377.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4197563 + ... + 4215941.

It is an arithmetic number, because the mean of its divisors is an integer number (990038700).

Almost surely, 2^77315895008 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 77315895008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95043715200).

77315895008 is an abundant number, since it is smaller than the sum of its proper divisors (112771535392).

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

77315895008 is a wasteful number, since it uses less digits than its factorization.

77315895008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18473 (or 18465 counting only the distinct ones).

The product of its (nonzero) digits is 2116800, while the sum is 53.

The spelling of 77315895008 in words is "seventy-seven billion, three hundred fifteen million, eight hundred ninety-five thousand, eight".