77307212160 has 512 divisors, whose sum is σ = 295287552000. Its totient is φ = 19050577920.

The previous prime is 77307212159. The next prime is 77307212183. The reversal of 77307212160 is 6121270377.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13458249 + ... + 13463991.

It is an arithmetic number, because the mean of its divisors is an integer number (576733500).

Almost surely, 2^77307212160 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 77307212160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147643776000).

77307212160 is an abundant number, since it is smaller than the sum of its proper divisors (217980339840).

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

77307212160 is a wasteful number, since it uses less digits than its factorization.

77307212160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5831 (or 5813 counting only the distinct ones).

The product of its (nonzero) digits is 24696, while the sum is 36.

The spelling of 77307212160 in words is "seventy-seven billion, three hundred seven million, two hundred twelve thousand, one hundred sixty".