774243873480 has 256 divisors, whose sum is σ = 2914323701760. Its totient is φ = 159856819200.

The previous prime is 774243873449. The next prime is 774243873547. The reversal of 774243873480 is 84378342477.

It is a self number, because there is not a number n which added to its sum of digits gives 774243873480.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1183825 + ... + 1717535.

It is an arithmetic number, because the mean of its divisors is an integer number (11384076960).

Almost surely, 2^774243873480 is an apocalyptic number.

774243873480 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 774243873480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1457161850880).

774243873480 is an abundant number, since it is smaller than the sum of its proper divisors (2140079828280).

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

774243873480 is a wasteful number, since it uses less digits than its factorization.

774243873480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533900 (or 533896 counting only the distinct ones).

The product of its (nonzero) digits is 25288704, while the sum is 57.

The spelling of 774243873480 in words is "seven hundred seventy-four billion, two hundred forty-three million, eight hundred seventy-three thousand, four hundred eighty".