774400648319 has 8 divisors (see below), whose sum is σ = 784537996032. Its totient is φ = 764282520280.

The previous prime is 774400648309. The next prime is 774400648327. The reversal of 774400648319 is 913846004477.

774400648319 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 774400648319 - 2¹² = 774400644223 is a prime.

It is a super-2 number, since 2×774400648319² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (774400648309) 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, 4723799 + ... + 4884984.

It is an arithmetic number, because the mean of its divisors is an integer number (98067249504).

Almost surely, 2^774400648319 is an apocalyptic number.

774400648319 is a deficient number, since it is larger than the sum of its proper divisors (10137347713).

774400648319 is an equidigital number, since it uses as much as digits as its factorization.

774400648319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9609837.

The product of its (nonzero) digits is 4064256, while the sum is 53.

The spelling of 774400648319 in words is "seven hundred seventy-four billion, four hundred million, six hundred forty-eight thousand, three hundred nineteen".