20345031502255 has 4 divisors (see below), whose sum is σ = 24414037802712. Its totient is φ = 16276025201800.

The previous prime is 20345031502247. The next prime is 20345031502277. The reversal of 20345031502255 is 55220513054302.

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

It is not a de Polignac number, because 20345031502255 - 2³ = 20345031502247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 2034503150221 + ... + 2034503150230.

It is an arithmetic number, because the mean of its divisors is an integer number (6103509450678).

Almost surely, 2^{20345031502255} is an apocalyptic number.

20345031502255 is a deficient number, since it is larger than the sum of its proper divisors (4069006300457).

20345031502255 is an equidigital number, since it uses as much as digits as its factorization.

20345031502255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4069006300456.

The product of its (nonzero) digits is 180000, while the sum is 37.

Adding to 20345031502255 its reverse (55220513054302), we get a palindrome (75565544556557).

The spelling of 20345031502255 in words is "twenty trillion, three hundred forty-five billion, thirty-one million, five hundred two thousand, two hundred fifty-five".