20247335712 has 144 divisors (see below), whose sum is σ = 63244359360. Its totient is φ = 6115862016.

The previous prime is 20247335671. The next prime is 20247335729. The reversal of 20247335712 is 21753374202.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45418 + ... + 206294.

It is an arithmetic number, because the mean of its divisors is an integer number (439196940).

Almost surely, 2^20247335712 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 20247335712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31622179680).

20247335712 is an abundant number, since it is smaller than the sum of its proper divisors (42997023648).

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

20247335712 is a wasteful number, since it uses less digits than its factorization.

20247335712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160935 (or 160924 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 36.

The spelling of 20247335712 in words is "twenty billion, two hundred forty-seven million, three hundred thirty-five thousand, seven hundred twelve".