20308108850 has 24 divisors (see below), whose sum is σ = 37907532468. Its totient is φ = 8094329600.

The previous prime is 20308108823. The next prime is 20308108853. The reversal of 20308108850 is 5880180302.

It can be written as a sum of positive squares in 6 ways, for example, as 3114867721 + 17193241129 = 55811^2 + 131123^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20308108850.

It is not an unprimeable number, because it can be changed into a prime (20308108853) 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, 708659 + ... + 736758.

Almost surely, 2^20308108850 is an apocalyptic number.

20308108850 is a deficient number, since it is larger than the sum of its proper divisors (17599423618).

20308108850 is a wasteful number, since it uses less digits than its factorization.

20308108850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1445710 (or 1445705 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 35.

The spelling of 20308108850 in words is "twenty billion, three hundred eight million, one hundred eight thousand, eight hundred fifty".