20159267944 has 16 divisors (see below), whose sum is σ = 38165605920. Its totient is φ = 9981773040.

The previous prime is 20159267939. The next prime is 20159267963. The reversal of 20159267944 is 44976295102.

It is a happy 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 3 ways as a sum of consecutive naturals, for example, 12231742 + ... + 12233389.

It is an arithmetic number, because the mean of its divisors is an integer number (2385350370).

Almost surely, 2^20159267944 is an apocalyptic number.

It is an amenable number.

20159267944 is a deficient number, since it is larger than the sum of its proper divisors (18006337976).

20159267944 is a wasteful number, since it uses less digits than its factorization.

20159267944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24465240 (or 24465236 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 49.

The spelling of 20159267944 in words is "twenty billion, one hundred fifty-nine million, two hundred sixty-seven thousand, nine hundred forty-four".