20344510225542 has 16 divisors (see below), whose sum is σ = 40725060341040. Its totient is φ = 6775496760192.

The previous prime is 20344510225541. The next prime is 20344510225579. The reversal of 20344510225542 is 24552201544302.

It is a super-3 number, since 3×20344510225542³ (a number of 41 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20344510225542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20344510225541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1501654743 + ... + 1501668290.

It is an arithmetic number, because the mean of its divisors is an integer number (2545316271315).

Almost surely, 2^{20344510225542} is an apocalyptic number.

20344510225542 is an abundant number, since it is smaller than the sum of its proper divisors (20380550115498).

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

20344510225542 is a wasteful number, since it uses less digits than its factorization.

20344510225542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3003324167.

The product of its (nonzero) digits is 384000, while the sum is 39.

Adding to 20344510225542 its reverse (24552201544302), we get a palindrome (44896711769844).

The spelling of 20344510225542 in words is "twenty trillion, three hundred forty-four billion, five hundred ten million, two hundred twenty-five thousand, five hundred forty-two".