20345026115453 has 4 divisors (see below), whose sum is σ = 21910028124348. Its totient is φ = 18780024106560.

The previous prime is 20345026115441. The next prime is 20345026115473. The reversal of 20345026115453 is 35451162054302.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2385424648324 + 17959601467129 = 1544482^2 + 4237877^2 .

It is a cyclic number.

It is not a de Polignac number, because 20345026115453 - 2¹⁸ = 20345025853309 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20345026115453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20345026115413) 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, 782501004428 + ... + 782501004453.

It is an arithmetic number, because the mean of its divisors is an integer number (5477507031087).

Almost surely, 2^{20345026115453} is an apocalyptic number.

It is an amenable number.

20345026115453 is a deficient number, since it is larger than the sum of its proper divisors (1565002008895).

20345026115453 is a wasteful number, since it uses less digits than its factorization.

20345026115453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1565002008894.

The product of its (nonzero) digits is 432000, while the sum is 41.

Adding to 20345026115453 its reverse (35451162054302), we get a palindrome (55796188169755).

The spelling of 20345026115453 in words is "twenty trillion, three hundred forty-five billion, twenty-six million, one hundred fifteen thousand, four hundred fifty-three".