20260618055 has 4 divisors (see below), whose sum is σ = 24312741672. Its totient is φ = 16208494440.

The previous prime is 20260618033. The next prime is 20260618057. The reversal of 20260618055 is 55081606202.

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

It is not a de Polignac number, because 20260618055 - 2¹² = 20260613959 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 (20260618057) 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, 2026061801 + ... + 2026061810.

It is an arithmetic number, because the mean of its divisors is an integer number (6078185418).

Almost surely, 2^20260618055 is an apocalyptic number.

20260618055 is a deficient number, since it is larger than the sum of its proper divisors (4052123617).

20260618055 is an equidigital number, since it uses as much as digits as its factorization.

20260618055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4052123616.

The product of its (nonzero) digits is 28800, while the sum is 35.

The spelling of 20260618055 in words is "twenty billion, two hundred sixty million, six hundred eighteen thousand, fifty-five".