20147422738 has 16 divisors (see below), whose sum is σ = 32309521920. Its totient is φ = 9389088576.

The previous prime is 20147422727. The next prime is 20147422751. The reversal of 20147422738 is 83722474102.

It is a self number, because there is not a number n which added to its sum of digits gives 20147422738.

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, 2873058 + ... + 2880061.

It is an arithmetic number, because the mean of its divisors is an integer number (2019345120).

Almost surely, 2^20147422738 is an apocalyptic number.

20147422738 is a deficient number, since it is larger than the sum of its proper divisors (12162099182).

20147422738 is a wasteful number, since it uses less digits than its factorization.

20147422738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5753241.

The product of its (nonzero) digits is 150528, while the sum is 40.

The spelling of 20147422738 in words is "twenty billion, one hundred forty-seven million, four hundred twenty-two thousand, seven hundred thirty-eight".