20418252950 has 12 divisors (see below), whose sum is σ = 37977950580. Its totient is φ = 8167301160.

The previous prime is 20418252949. The next prime is 20418252961. The reversal of 20418252950 is 5925281402.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 204182480 + ... + 204182579.

It is an arithmetic number, because the mean of its divisors is an integer number (3164829215).

Almost surely, 2^20418252950 is an apocalyptic number.

20418252950 is a deficient number, since it is larger than the sum of its proper divisors (17559697630).

20418252950 is a wasteful number, since it uses less digits than its factorization.

20418252950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408365071 (or 408365066 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 38.

The spelling of 20418252950 in words is "twenty billion, four hundred eighteen million, two hundred fifty-two thousand, nine hundred fifty".