20848198189399 has 4 divisors (see below), whose sum is σ = 23826512216464. Its totient is φ = 17869884162336.

The previous prime is 20848198189367. The next prime is 20848198189421. The reversal of 20848198189399 is 99398189184802.

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

It is a cyclic number.

It is not a de Polignac number, because 20848198189399 - 2⁵ = 20848198189367 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 (20848198189339) 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, 1489157013522 + ... + 1489157013535.

It is an arithmetic number, because the mean of its divisors is an integer number (5956628054116).

Almost surely, 2^{20848198189399} is an apocalyptic number.

20848198189399 is a deficient number, since it is larger than the sum of its proper divisors (2978314027065).

20848198189399 is an equidigital number, since it uses as much as digits as its factorization.

20848198189399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2978314027064.

The product of its (nonzero) digits is 644972544, while the sum is 79.

The spelling of 20848198189399 in words is "twenty trillion, eight hundred forty-eight billion, one hundred ninety-eight million, one hundred eighty-nine thousand, three hundred ninety-nine".