774400648321 has 8 divisors (see below), whose sum is σ = 863109082080. Its totient is φ = 690487265088.

The previous prime is 774400648309. The next prime is 774400648327. The reversal of 774400648321 is 123846004477.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 774400648321 - 2⁵ = 774400648289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (774400648327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1198762291 + ... + 1198762936.

It is an arithmetic number, because the mean of its divisors is an integer number (107888635260).

Almost surely, 2^774400648321 is an apocalyptic number.

It is an amenable number.

774400648321 is a deficient number, since it is larger than the sum of its proper divisors (88708433759).

774400648321 is a wasteful number, since it uses less digits than its factorization.

774400648321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2397525263.

The product of its (nonzero) digits is 903168, while the sum is 46.

The spelling of 774400648321 in words is "seven hundred seventy-four billion, four hundred million, six hundred forty-eight thousand, three hundred twenty-one".