20423866250 has 40 divisors (see below), whose sum is σ = 39602651220. Its totient is φ = 7887824000.

The previous prime is 20423866247. The next prime is 20423866261. The reversal of 20423866250 is 5266832402.

It can be written as a sum of positive squares in 10 ways, for example, as 4671859201 + 15752007049 = 68351^2 + 125507^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 245459 + ... + 317958.

Almost surely, 2^20423866250 is an apocalyptic number.

20423866250 is a deficient number, since it is larger than the sum of its proper divisors (19178784970).

20423866250 is an equidigital number, since it uses as much as digits as its factorization.

20423866250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563468 (or 563453 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 38.

The spelling of 20423866250 in words is "twenty billion, four hundred twenty-three million, eight hundred sixty-six thousand, two hundred fifty".