77702837960 has 128 divisors (see below), whose sum is σ = 197078400000. Its totient is φ = 27316224000.

The previous prime is 77702837951. The next prime is 77702837963. The reversal of 77702837960 is 6973820777.

It is a junction number, because it is equal to n+sod(n) for n = 77702837896 and 77702837905.

It is not an unprimeable number, because it can be changed into a prime (77702837963) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17034080 + ... + 17038640.

It is an arithmetic number, because the mean of its divisors is an integer number (1539675000).

Almost surely, 2^77702837960 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 77702837960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98539200000).

77702837960 is an abundant number, since it is smaller than the sum of its proper divisors (119375562040).

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

77702837960 is a wasteful number, since it uses less digits than its factorization.

77702837960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5863 (or 5859 counting only the distinct ones).

The product of its (nonzero) digits is 6223392, while the sum is 56.

The spelling of 77702837960 in words is "seventy-seven billion, seven hundred two million, eight hundred thirty-seven thousand, nine hundred sixty".