20041445542 has 4 divisors (see below), whose sum is σ = 30062168316. Its totient is φ = 10020722770.

The previous prime is 20041445513. The next prime is 20041445561. The reversal of 20041445542 is 24554414002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24554414002 = 2 ⋅12277207001.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 as a sum of consecutive naturals, namely, 5010361384 + ... + 5010361387.

It is an arithmetic number, because the mean of its divisors is an integer number (7515542079).

Almost surely, 2^20041445542 is an apocalyptic number.

20041445542 is a deficient number, since it is larger than the sum of its proper divisors (10020722774).

20041445542 is a wasteful number, since it uses less digits than its factorization.

20041445542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10020722773.

The product of its (nonzero) digits is 25600, while the sum is 31.

Adding to 20041445542 its reverse (24554414002), we get a palindrome (44595859544).

The spelling of 20041445542 in words is "twenty billion, forty-one million, four hundred forty-five thousand, five hundred forty-two".