774713678416 has 40 divisors (see below), whose sum is σ = 1600903149480. Its totient is φ = 361910022144.

The previous prime is 774713678339. The next prime is 774713678423. The reversal of 774713678416 is 614876317477.

It can be written as a sum of positive squares in 4 ways, for example, as 51356624400 + 723357054016 = 226620^2 + 850504^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10357671 + ... + 10432198.

It is an arithmetic number, because the mean of its divisors is an integer number (40022578737).

Almost surely, 2^774713678416 is an apocalyptic number.

It is an amenable number.

774713678416 is an abundant number, since it is smaller than the sum of its proper divisors (826189471064).

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

774713678416 is a wasteful number, since it uses less digits than its factorization.

774713678416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20790031 (or 20790025 counting only the distinct ones).

The product of its digits is 33191424, while the sum is 61.

The spelling of 774713678416 in words is "seven hundred seventy-four billion, seven hundred thirteen million, six hundred seventy-eight thousand, four hundred sixteen".