20149782368 has 48 divisors (see below), whose sum is σ = 40254356016. Its totient is φ = 9926737920.

The previous prime is 20149782329. The next prime is 20149782371. The reversal of 20149782368 is 86328794102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2619488 + ... + 2627168.

It is an arithmetic number, because the mean of its divisors is an integer number (838632417).

Almost surely, 2^20149782368 is an apocalyptic number.

It is an amenable number.

20149782368 is a deficient number, since it is larger than the sum of its proper divisors (20104573648).

20149782368 is a wasteful number, since it uses less digits than its factorization.

20149782368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8887 (or 8879 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 50.

The spelling of 20149782368 in words is "twenty billion, one hundred forty-nine million, seven hundred eighty-two thousand, three hundred sixty-eight".