247994747308 has 144 divisors (see below), whose sum is σ = 554325375744. Its totient is φ = 96275874240.

The previous prime is 247994747281. The next prime is 247994747311. The reversal of 247994747308 is 803747499742.

It is a self number, because there is not a number n which added to its sum of digits gives 247994747308.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 327601666 + ... + 327602422.

It is an arithmetic number, because the mean of its divisors is an integer number (3849481776).

Almost surely, 2^247994747308 is an apocalyptic number.

247994747308 is a gapful number since it is divisible by the number (28) 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 247994747308, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (277162687872).

247994747308 is an abundant number, since it is smaller than the sum of its proper divisors (306330628436).

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

247994747308 is an equidigital number, since it uses as much as digits as its factorization.

247994747308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1250 (or 1220 counting only the distinct ones).

The product of its (nonzero) digits is 85349376, while the sum is 64.

The spelling of 247994747308 in words is "two hundred forty-seven billion, nine hundred ninety-four million, seven hundred forty-seven thousand, three hundred eight".