20331409850 has 12 divisors (see below), whose sum is σ = 37816422414. Its totient is φ = 8132563920.

The previous prime is 20331409837. The next prime is 20331409859. The reversal of 20331409850 is 5890413302.

It can be written as a sum of positive squares in 3 ways, for example, as 7673584801 + 12657825049 = 87599^2 + 112507^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20331409850.

It is not an unprimeable number, because it can be changed into a prime (20331409859) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 203314049 + ... + 203314148.

Almost surely, 2^20331409850 is an apocalyptic number.

20331409850 is a deficient number, since it is larger than the sum of its proper divisors (17485012564).

20331409850 is a wasteful number, since it uses less digits than its factorization.

20331409850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406628209 (or 406628204 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The spelling of 20331409850 in words is "twenty billion, three hundred thirty-one million, four hundred nine thousand, eight hundred fifty".