20848004399 has 4 divisors (see below), whose sum is σ = 20848380720. Its totient is φ = 20847628080.

The previous prime is 20848004381. The next prime is 20848004473. The reversal of 20848004399 is 99340084802.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20848004399 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 (20848007399) by changing a digit.

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, 86894 + ... + 221915.

It is an arithmetic number, because the mean of its divisors is an integer number (5212095180).

Almost surely, 2^20848004399 is an apocalyptic number.

20848004399 is a deficient number, since it is larger than the sum of its proper divisors (376321).

20848004399 is an equidigital number, since it uses as much as digits as its factorization.

20848004399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376320.

The product of its (nonzero) digits is 497664, while the sum is 47.

The spelling of 20848004399 in words is "twenty billion, eight hundred forty-eight million, four thousand, three hundred ninety-nine".