247274320000 has 160 divisors (see below), whose sum is σ = 616392691200. Its totient is φ = 98778240000.

The previous prime is 247274319979. The next prime is 247274320003. The reversal of 247274320000 is 23472742.

It is a tau number, because it is divible by the number of its divisors (160).

It is a super-2 number, since 2×247274320000² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (247274320003) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 79278441 + ... + 79281559.

It is an arithmetic number, because the mean of its divisors is an integer number (3852454320).

Almost surely, 2^247274320000 is an apocalyptic number.

247274320000 is a gapful number since it is divisible by the number (20) 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 247274320000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (308196345600).

247274320000 is an abundant number, since it is smaller than the sum of its proper divisors (369118371200).

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

247274320000 is an frugal number, since it uses more digits than its factorization.

247274320000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4144 (or 4117 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 31.

Adding to 247274320000 its reverse (23472742), we get a palindrome (247297792742).

The spelling of 247274320000 in words is "two hundred forty-seven billion, two hundred seventy-four million, three hundred twenty thousand".