20434350131051 has 4 divisors (see below), whose sum is σ = 20434518653952. Its totient is φ = 20434181608152.

The previous prime is 20434350131033. The next prime is 20434350131203. The reversal of 20434350131051 is 15013105343402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20434350131051 - 2²⁶ = 20434283022187 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20434350130999 and 20434350131017.

It is not an unprimeable number, because it can be changed into a prime (20434350101051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84079436 + ... + 84322121.

It is an arithmetic number, because the mean of its divisors is an integer number (5108629663488).

Almost surely, 2^{20434350131051} is an apocalyptic number.

20434350131051 is a deficient number, since it is larger than the sum of its proper divisors (168522901).

20434350131051 is a wasteful number, since it uses less digits than its factorization.

20434350131051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168522900.

The product of its (nonzero) digits is 21600, while the sum is 32.

Adding to 20434350131051 its reverse (15013105343402), we get a palindrome (35447455474453).

The spelling of 20434350131051 in words is "twenty trillion, four hundred thirty-four billion, three hundred fifty million, one hundred thirty-one thousand, fifty-one".