20382876549 has 12 divisors (see below), whose sum is σ = 33647923296. Its totient is φ = 11647357992.

The previous prime is 20382876539. The next prime is 20382876593. The reversal of 20382876549 is 94567828302.

20382876549 is a `hidden beast` number, since 2 + 0 + 3 + 8 + 28 + 76 + 549 = 666.

It is not a de Polignac number, because 20382876549 - 2⁴ = 20382876533 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20382876495 and 20382876504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20382876539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 161768799 + ... + 161768924.

It is an arithmetic number, because the mean of its divisors is an integer number (2803993608).

Almost surely, 2^20382876549 is an apocalyptic number.

It is an amenable number.

20382876549 is a deficient number, since it is larger than the sum of its proper divisors (13265046747).

20382876549 is a wasteful number, since it uses less digits than its factorization.

20382876549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323537736 (or 323537733 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 54.

The spelling of 20382876549 in words is "twenty billion, three hundred eighty-two million, eight hundred seventy-six thousand, five hundred forty-nine".