77469646944 has 192 divisors, whose sum is σ = 217549463040. Its totient is φ = 24093511680.

The previous prime is 77469646931. The next prime is 77469646949. The reversal of 77469646944 is 44964696477.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77469646949) 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, 12210237 + ... + 12216579.

It is an arithmetic number, because the mean of its divisors is an integer number (1133070120).

Almost surely, 2^77469646944 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 77469646944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108774731520).

77469646944 is an abundant number, since it is smaller than the sum of its proper divisors (140079816096).

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

77469646944 is a wasteful number, since it uses less digits than its factorization.

77469646944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6533 (or 6525 counting only the distinct ones).

The product of its digits is 219469824, while the sum is 66.

The spelling of 77469646944 in words is "seventy-seven billion, four hundred sixty-nine million, six hundred forty-six thousand, nine hundred forty-four".