77043796416 has 168 divisors, whose sum is σ = 230522499584. Its totient is φ = 24577136640.

The previous prime is 77043796399. The next prime is 77043796433. The reversal of 77043796416 is 61469734077.

It is an interprime number because it is at equal distance from previous prime (77043796399) and next prime (77043796433).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1270401 + ... + 1329663.

Almost surely, 2^77043796416 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 77043796416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115261249792).

77043796416 is an abundant number, since it is smaller than the sum of its proper divisors (153478703168).

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

77043796416 is a wasteful number, since it uses less digits than its factorization.

77043796416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59379 (or 59366 counting only the distinct ones).

The product of its (nonzero) digits is 5334336, while the sum is 54.

The spelling of 77043796416 in words is "seventy-seven billion, forty-three million, seven hundred ninety-six thousand, four hundred sixteen".