20208194450 has 24 divisors (see below), whose sum is σ = 39221471808. Its totient is φ = 7731830480.

The previous prime is 20208194437. The next prime is 20208194483. The reversal of 20208194450 is 5449180202.

20208194450 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×20208194450² (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 20208194450.

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 11 ways as a sum of consecutive naturals, for example, 8785022 + ... + 8787321.

It is an arithmetic number, because the mean of its divisors is an integer number (1634227992).

Almost surely, 2^20208194450 is an apocalyptic number.

20208194450 is a deficient number, since it is larger than the sum of its proper divisors (19013277358).

20208194450 is a wasteful number, since it uses less digits than its factorization.

20208194450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17572378 (or 17572373 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The spelling of 20208194450 in words is "twenty billion, two hundred eight million, one hundred ninety-four thousand, four hundred fifty".