774716218322 has 18 divisors (see below), whose sum is σ = 1171259368887. Its totient is φ = 384320267500.

The previous prime is 774716218207. The next prime is 774716218351. The reversal of 774716218322 is 223812617477.

It can be written as a sum of positive squares in only one way, i.e., 387358109161 + 387358109161 = 622381^2 + 622381^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=622381.

It is a super-2 number, since 2×774716218322² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 163061447 + ... + 163066197.

Almost surely, 2^774716218322 is an apocalyptic number.

774716218322 is a deficient number, since it is larger than the sum of its proper divisors (396543150565).

774716218322 is an frugal number, since it uses more digits than its factorization.

774716218322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9766 (or 4884 counting only the distinct ones).

The product of its digits is 1580544, while the sum is 50.

Multiplying 774716218322 by its sum of digits (50), we get a square (38735810916100 = 6223810²).

The spelling of 774716218322 in words is "seven hundred seventy-four billion, seven hundred sixteen million, two hundred eighteen thousand, three hundred twenty-two".