20999182838 has 8 divisors (see below), whose sum is σ = 31606279488. Its totient is φ = 10463756344.

The previous prime is 20999182811. The next prime is 20999182891. The reversal of 20999182838 is 83828199902.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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, 17916806 + ... + 17917977.

It is an arithmetic number, because the mean of its divisors is an integer number (3950784936).

Almost surely, 2^20999182838 is an apocalyptic number.

20999182838 is a deficient number, since it is larger than the sum of its proper divisors (10607096650).

20999182838 is a wasteful number, since it uses less digits than its factorization.

20999182838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35835078.

The product of its (nonzero) digits is 4478976, while the sum is 59.

The spelling of 20999182838 in words is "twenty billion, nine hundred ninety-nine million, one hundred eighty-two thousand, eight hundred thirty-eight".