20568010549 has 8 divisors (see below), whose sum is σ = 22235687840. Its totient is φ = 18958848336.

The previous prime is 20568010543. The next prime is 20568010559. The reversal of 20568010549 is 94501086502.

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

It is a cyclic number.

It is not a de Polignac number, because 20568010549 - 2²¹ = 20565913397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20568010543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14628039 + ... + 14629444.

It is an arithmetic number, because the mean of its divisors is an integer number (2779460980).

Almost surely, 2^20568010549 is an apocalyptic number.

It is an amenable number.

20568010549 is a deficient number, since it is larger than the sum of its proper divisors (1667677291).

20568010549 is a wasteful number, since it uses less digits than its factorization.

20568010549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29257539.

The product of its (nonzero) digits is 86400, while the sum is 40.

The spelling of 20568010549 in words is "twenty billion, five hundred sixty-eight million, ten thousand, five hundred forty-nine".