20434123430104 has 8 divisors (see below), whose sum is σ = 38313981431460. Its totient is φ = 10217061715048.

The previous prime is 20434123430041. The next prime is 20434123430107. The reversal of 20434123430104 is 40103432143402.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20434123430107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1277132714374 + ... + 1277132714389.

Almost surely, 2^{20434123430104} is an apocalyptic number.

It is an amenable number.

20434123430104 is a deficient number, since it is larger than the sum of its proper divisors (17879858001356).

20434123430104 is a wasteful number, since it uses less digits than its factorization.

20434123430104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2554265428769 (or 2554265428765 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 20434123430104 its reverse (40103432143402), we get a palindrome (60537555573506).

The spelling of 20434123430104 in words is "twenty trillion, four hundred thirty-four billion, one hundred twenty-three million, four hundred thirty thousand, one hundred four".