20598168845 has 4 divisors (see below), whose sum is σ = 24717802620. Its totient is φ = 16478535072.

The previous prime is 20598168827. The next prime is 20598168863. The reversal of 20598168845 is 54886189502.

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

It is an interprime number because it is at equal distance from previous prime (20598168827) and next prime (20598168863).

It can be written as a sum of positive squares in 2 ways, for example, as 3682305124 + 16915863721 = 60682^2 + 130061^2 .

It is a cyclic number.

It is not a de Polignac number, because 20598168845 - 2³² = 16303201549 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2059816880 + ... + 2059816889.

It is an arithmetic number, because the mean of its divisors is an integer number (6179450655).

Almost surely, 2^20598168845 is an apocalyptic number.

It is an amenable number.

20598168845 is a deficient number, since it is larger than the sum of its proper divisors (4119633775).

20598168845 is an equidigital number, since it uses as much as digits as its factorization.

20598168845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4119633774.

The product of its (nonzero) digits is 5529600, while the sum is 56.

The spelling of 20598168845 in words is "twenty billion, five hundred ninety-eight million, one hundred sixty-eight thousand, eight hundred forty-five".