774147520361 has 16 divisors (see below), whose sum is σ = 827322685200. Its totient is φ = 721822814208.

The previous prime is 774147520357. The next prime is 774147520381. The reversal of 774147520361 is 163025741477.

It can be written as a sum of positive squares in 8 ways, for example, as 110646043225 + 663501477136 = 332635^2 + 814556^2 .

It is a cyclic number.

It is not a de Polignac number, because 774147520361 - 2² = 774147520357 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (774147520301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15185831 + ... + 15236723.

It is an arithmetic number, because the mean of its divisors is an integer number (51707667825).

Almost surely, 2^774147520361 is an apocalyptic number.

It is an amenable number.

774147520361 is a deficient number, since it is larger than the sum of its proper divisors (53175164839).

774147520361 is a wasteful number, since it uses less digits than its factorization.

774147520361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59228.

The product of its (nonzero) digits is 987840, while the sum is 47.

The spelling of 774147520361 in words is "seven hundred seventy-four billion, one hundred forty-seven million, five hundred twenty thousand, three hundred sixty-one".