20949230281 has 8 divisors (see below), whose sum is σ = 24589058240. Its totient is φ = 17471172528.

The previous prime is 20949230227. The next prime is 20949230299. The reversal of 20949230281 is 18203294902.

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 20949230281 - 2¹⁵ = 20949197513 is a prime.

It is a super-2 number, since 2×20949230281² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20949230681) 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 7 ways as a sum of consecutive naturals, for example, 40442271 + ... + 40442788.

It is an arithmetic number, because the mean of its divisors is an integer number (3073632280).

Almost surely, 2^20949230281 is an apocalyptic number.

It is an amenable number.

20949230281 is a deficient number, since it is larger than the sum of its proper divisors (3639827959).

20949230281 is an equidigital number, since it uses as much as digits as its factorization.

20949230281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80885103.

The product of its (nonzero) digits is 62208, while the sum is 40.

The spelling of 20949230281 in words is "twenty billion, nine hundred forty-nine million, two hundred thirty thousand, two hundred eighty-one".