20854848890 has 8 divisors (see below), whose sum is σ = 37538728020. Its totient is φ = 8341939552.

The previous prime is 20854848827. The next prime is 20854848907. The reversal of 20854848890 is 9884845802.

It can be written as a sum of positive squares in 2 ways, for example, as 18796684201 + 2058164689 = 137101^2 + 45367^2 .

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

It is a Curzon 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, 1042742435 + ... + 1042742454.

Almost surely, 2^20854848890 is an apocalyptic number.

20854848890 is a deficient number, since it is larger than the sum of its proper divisors (16683879130).

20854848890 is a wasteful number, since it uses less digits than its factorization.

20854848890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2085484896.

The product of its (nonzero) digits is 5898240, while the sum is 56.

The spelling of 20854848890 in words is "twenty billion, eight hundred fifty-four million, eight hundred forty-eight thousand, eight hundred ninety".