20122854399 has 96 divisors (see below), whose sum is σ = 32172940800. Its totient is φ = 12078823680.

The previous prime is 20122854377. The next prime is 20122854403. The reversal of 20122854399 is 99345822102.

20122854399 is a `hidden beast` number, since 2 + 0 + 12 + 2 + 8 + 543 + 99 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-20122854399 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20122854359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 65546604 + ... + 65546910.

It is an arithmetic number, because the mean of its divisors is an integer number (335134800).

Almost surely, 2^20122854399 is an apocalyptic number.

20122854399 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

20122854399 is a deficient number, since it is larger than the sum of its proper divisors (12050086401).

20122854399 is a wasteful number, since it uses less digits than its factorization.

20122854399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605 (or 602 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The spelling of 20122854399 in words is "twenty billion, one hundred twenty-two million, eight hundred fifty-four thousand, three hundred ninety-nine".