20345004504102 has 32 divisors (see below), whose sum is σ = 41185437350400. Its totient is φ = 6699117362400.

The previous prime is 20345004504067. The next prime is 20345004504109. The reversal of 20345004504102 is 20140540054302.

It is a self number, because there is not a number n which added to its sum of digits gives 20345004504102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20345004504109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1390524 + ... + 6528672.

It is an arithmetic number, because the mean of its divisors is an integer number (1287044917200).

Almost surely, 2^{20345004504102} is an apocalyptic number.

20345004504102 is an abundant number, since it is smaller than the sum of its proper divisors (20840432846298).

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

20345004504102 is a wasteful number, since it uses less digits than its factorization.

20345004504102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5146188.

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 20345004504102 its reverse (20140540054302), we get a palindrome (40485544558404).

The spelling of 20345004504102 in words is "twenty trillion, three hundred forty-five billion, four million, five hundred four thousand, one hundred two".