20449622887 has 8 divisors (see below), whose sum is σ = 20540170112. Its totient is φ = 20359123200.

The previous prime is 20449622857. The next prime is 20449622891. The reversal of 20449622887 is 78822694402.

It is a happy number.

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 20449622887 - 2¹¹ = 20449620839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20449622857) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1062187 + ... + 1081267.

It is an arithmetic number, because the mean of its divisors is an integer number (2567521264).

Almost surely, 2^20449622887 is an apocalyptic number.

20449622887 is a deficient number, since it is larger than the sum of its proper divisors (90547225).

20449622887 is a wasteful number, since it uses less digits than its factorization.

20449622887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23769.

The product of its (nonzero) digits is 3096576, while the sum is 52.

The spelling of 20449622887 in words is "twenty billion, four hundred forty-nine million, six hundred twenty-two thousand, eight hundred eighty-seven".