20307169250 has 32 divisors (see below), whose sum is σ = 38899111680. Its totient is φ = 7933959600.

The previous prime is 20307169247. The next prime is 20307169279. The reversal of 20307169250 is 5296170302.

It is a super-2 number, since 2×20307169250² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20307169250.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 933770 + ... + 955269.

It is an arithmetic number, because the mean of its divisors is an integer number (1215597240).

Almost surely, 2^20307169250 is an apocalyptic number.

20307169250 is a deficient number, since it is larger than the sum of its proper divisors (18591942430).

20307169250 is a wasteful number, since it uses less digits than its factorization.

20307169250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1889099 (or 1889089 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 35.

The spelling of 20307169250 in words is "twenty billion, three hundred seven million, one hundred sixty-nine thousand, two hundred fifty".