774463472640 has 1232 divisors, whose sum is σ = 3274651993536. Its totient is φ = 173187072000.

The previous prime is 774463472633. The next prime is 774463472719. The reversal of 774463472640 is 46274364477.

774463472640 is a `hidden beast` number, since 7 + 74 + 4 + 63 + 472 + 6 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 533743915 + ... + 533745365.

It is an arithmetic number, because the mean of its divisors is an integer number (2657996748).

Almost surely, 2^774463472640 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 774463472640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1637325996768).

774463472640 is an abundant number, since it is smaller than the sum of its proper divisors (2500188520896).

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

774463472640 is a wasteful number, since it uses less digits than its factorization.

774463472640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1518 (or 1485 counting only the distinct ones).

The product of its (nonzero) digits is 18966528, while the sum is 54.

The spelling of 774463472640 in words is "seven hundred seventy-four billion, four hundred sixty-three million, four hundred seventy-two thousand, six hundred forty".