20354302253 has 4 divisors (see below), whose sum is σ = 20402880960. Its totient is φ = 20305723548.

The previous prime is 20354302247. The next prime is 20354302259. The reversal of 20354302253 is 35220345302.

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 an interprime number because it is at equal distance from previous prime (20354302247) and next prime (20354302259).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20354302253 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 (20354302259) 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, 24288725 + ... + 24289562.

It is an arithmetic number, because the mean of its divisors is an integer number (5100720240).

Almost surely, 2^20354302253 is an apocalyptic number.

It is an amenable number.

20354302253 is a deficient number, since it is larger than the sum of its proper divisors (48578707).

20354302253 is an equidigital number, since it uses as much as digits as its factorization.

20354302253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48578706.

The product of its (nonzero) digits is 21600, while the sum is 29.

Adding to 20354302253 its reverse (35220345302), we get a palindrome (55574647555).

The spelling of 20354302253 in words is "twenty billion, three hundred fifty-four million, three hundred two thousand, two hundred fifty-three".