779122167720 has 256 divisors, whose sum is σ = 2673105926400. Its totient is φ = 180081377280.

The previous prime is 779122167709. The next prime is 779122167721. The reversal of 779122167720 is 27761221977.

It is not an unprimeable number, because it can be changed into a prime (779122167721) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3233010 + ... + 3465630.

It is an arithmetic number, because the mean of its divisors is an integer number (10441820025).

Almost surely, 2^779122167720 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 779122167720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1336552963200).

779122167720 is an abundant number, since it is smaller than the sum of its proper divisors (1893983758680).

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

779122167720 is a wasteful number, since it uses less digits than its factorization.

779122167720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232780 (or 232776 counting only the distinct ones).

The product of its (nonzero) digits is 1037232, while the sum is 51.

The spelling of 779122167720 in words is "seven hundred seventy-nine billion, one hundred twenty-two million, one hundred sixty-seven thousand, seven hundred twenty".