770816667516 has 192 divisors, whose sum is σ = 2150987317248. Its totient is φ = 210248462592.

The previous prime is 770816667449. The next prime is 770816667539. The reversal of 770816667516 is 615766618077.

It is a super-2 number, since 2×770816667516² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 770816667516.

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, 144806031 + ... + 144811353.

It is an arithmetic number, because the mean of its divisors is an integer number (11203058944).

Almost surely, 2^770816667516 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 770816667516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1075493658624).

770816667516 is an abundant number, since it is smaller than the sum of its proper divisors (1380170649732).

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

770816667516 is a wasteful number, since it uses less digits than its factorization.

770816667516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6280 (or 6278 counting only the distinct ones).

The product of its (nonzero) digits is 17781120, while the sum is 60.

The spelling of 770816667516 in words is "seven hundred seventy billion, eight hundred sixteen million, six hundred sixty-seven thousand, five hundred sixteen".