247998780336 has 160 divisors (see below), whose sum is σ = 678148024320. Its totient is φ = 77988556800.

The previous prime is 247998780319. The next prime is 247998780383. The reversal of 247998780336 is 633087899742.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10244695 + ... + 10268873.

It is an arithmetic number, because the mean of its divisors is an integer number (4238425152).

Almost surely, 2^247998780336 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 247998780336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (339074012160).

247998780336 is an abundant number, since it is smaller than the sum of its proper divisors (430149243984).

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

247998780336 is a wasteful number, since it uses less digits than its factorization.

247998780336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24395 (or 24389 counting only the distinct ones).

The product of its (nonzero) digits is 109734912, while the sum is 66.

The spelling of 247998780336 in words is "two hundred forty-seven billion, nine hundred ninety-eight million, seven hundred eighty thousand, three hundred thirty-six".