20251026071047 has 4 divisors (see below), whose sum is σ = 20347002498136. Its totient is φ = 20155049643960.

The previous prime is 20251026071009. The next prime is 20251026071051. The reversal of 20251026071047 is 74017062015202.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20251026071047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20251026070997 and 20251026071015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20251026071747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47988213228 + ... + 47988213649.

It is an arithmetic number, because the mean of its divisors is an integer number (5086750624534).

Almost surely, 2^{20251026071047} is an apocalyptic number.

20251026071047 is a deficient number, since it is larger than the sum of its proper divisors (95976427089).

20251026071047 is an equidigital number, since it uses as much as digits as its factorization.

20251026071047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95976427088.

The product of its (nonzero) digits is 47040, while the sum is 37.

Adding to 20251026071047 its reverse (74017062015202), we get a palindrome (94268088086249).

The spelling of 20251026071047 in words is "twenty trillion, two hundred fifty-one billion, twenty-six million, seventy-one thousand, forty-seven".