20542438362 has 64 divisors (see below), whose sum is σ = 45333872640. Its totient is φ = 6183830400.

The previous prime is 20542438351. The next prime is 20542438387. The reversal of 20542438362 is 26383424502.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 20542438362.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 116839 + ... + 233957.

It is an arithmetic number, because the mean of its divisors is an integer number (708341760).

Almost surely, 2^20542438362 is an apocalyptic number.

20542438362 is an abundant number, since it is smaller than the sum of its proper divisors (24791434278).

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

20542438362 is a wasteful number, since it uses less digits than its factorization.

20542438362 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117219.

The product of its (nonzero) digits is 276480, while the sum is 39.

The spelling of 20542438362 in words is "twenty billion, five hundred forty-two million, four hundred thirty-eight thousand, three hundred sixty-two".