20251343053 has 4 divisors (see below), whose sum is σ = 20261536960. Its totient is φ = 20241149148.

The previous prime is 20251343011. The next prime is 20251343069. The reversal of 20251343053 is 35034315202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20251343053 - 2⁹ = 20251342541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20251343083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5093973 + ... + 5097946.

It is an arithmetic number, because the mean of its divisors is an integer number (5065384240).

Almost surely, 2^20251343053 is an apocalyptic number.

It is an amenable number.

20251343053 is a deficient number, since it is larger than the sum of its proper divisors (10193907).

20251343053 is a wasteful number, since it uses less digits than its factorization.

20251343053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10193906.

The product of its (nonzero) digits is 10800, while the sum is 28.

Adding to 20251343053 its reverse (35034315202), we get a palindrome (55285658255).

The spelling of 20251343053 in words is "twenty billion, two hundred fifty-one million, three hundred forty-three thousand, fifty-three".