20104111434 has 16 divisors (see below), whose sum is σ = 43863516000. Its totient is φ = 6092154960.

The previous prime is 20104111403. The next prime is 20104111463. The reversal of 20104111434 is 43411140102.

It is a self number, because there is not a number n which added to its sum of digits gives 20104111434.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152303809 + ... + 152303940.

It is an arithmetic number, because the mean of its divisors is an integer number (2741469750).

Almost surely, 2^20104111434 is an apocalyptic number.

20104111434 is an abundant number, since it is smaller than the sum of its proper divisors (23759404566).

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

20104111434 is a wasteful number, since it uses less digits than its factorization.

20104111434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304607765.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 20104111434 its reverse (43411140102), we get a palindrome (63515251536).

The spelling of 20104111434 in words is "twenty billion, one hundred four million, one hundred eleven thousand, four hundred thirty-four".