20104142254135 has 16 divisors (see below), whose sum is σ = 24188695377984. Its totient is φ = 16040886706432.

The previous prime is 20104142254129. The next prime is 20104142254193. The reversal of 20104142254135 is 53145224140102.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20104142254135 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20104142254135.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 628702 + ... + 6372091.

It is an arithmetic number, because the mean of its divisors is an integer number (1511793461124).

Almost surely, 2^{20104142254135} is an apocalyptic number.

20104142254135 is a deficient number, since it is larger than the sum of its proper divisors (4084553123849).

20104142254135 is an equidigital number, since it uses as much as digits as its factorization.

20104142254135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7002314.

The product of its (nonzero) digits is 38400, while the sum is 34.

Adding to 20104142254135 its reverse (53145224140102), we get a palindrome (73249366394237).

The spelling of 20104142254135 in words is "twenty trillion, one hundred four billion, one hundred forty-two million, two hundred fifty-four thousand, one hundred thirty-five".