20416140225642 has 128 divisors (see below), whose sum is σ = 48063657830400. Its totient is φ = 5659333422336.

The previous prime is 20416140225581. The next prime is 20416140225647. The reversal of 20416140225642 is 24652204161402.

It is a self number, because there is not a number n which added to its sum of digits gives 20416140225642.

It is not an unprimeable number, because it can be changed into a prime (20416140225647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 784348284 + ... + 784374312.

It is an arithmetic number, because the mean of its divisors is an integer number (375497326800).

Almost surely, 2^{20416140225642} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20416140225642, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24031828915200).

20416140225642 is an abundant number, since it is smaller than the sum of its proper divisors (27647517604758).

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

20416140225642 is a wasteful number, since it uses less digits than its factorization.

20416140225642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27500.

The product of its (nonzero) digits is 184320, while the sum is 39.

The spelling of 20416140225642 in words is "twenty trillion, four hundred sixteen billion, one hundred forty million, two hundred twenty-five thousand, six hundred forty-two".