774398064272 has 100 divisors (see below), whose sum is σ = 1751341327740. Its totient is φ = 331698495744.

The previous prime is 774398064263. The next prime is 774398064301. The reversal of 774398064272 is 272460893477.

It can be written as a sum of positive squares in 2 ways, for example, as 485775544576 + 288622519696 = 696976^2 + 537236^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 85010054 + ... + 85019162.

Almost surely, 2^774398064272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 774398064272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (875670663870).

774398064272 is an abundant number, since it is smaller than the sum of its proper divisors (976943263468).

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

774398064272 is an equidigital number, since it uses as much as digits as its factorization.

774398064272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11358 (or 11331 counting only the distinct ones).

The product of its (nonzero) digits is 28449792, while the sum is 59.

The spelling of 774398064272 in words is "seven hundred seventy-four billion, three hundred ninety-eight million, sixty-four thousand, two hundred seventy-two".