20444534450 has 24 divisors (see below), whose sum is σ = 38032036032. Its totient is φ = 8176695120.

The previous prime is 20444534443. The next prime is 20444534497. The reversal of 20444534450 is 5443544402.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20444534450.

It is an unprimeable number.

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, 408707 + ... + 455993.

It is an arithmetic number, because the mean of its divisors is an integer number (1584668168).

Almost surely, 2^20444534450 is an apocalyptic number.

20444534450 is a deficient number, since it is larger than the sum of its proper divisors (17587501582).

20444534450 is a wasteful number, since it uses less digits than its factorization.

20444534450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55946 (or 55941 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 35.

The spelling of 20444534450 in words is "twenty billion, four hundred forty-four million, five hundred thirty-four thousand, four hundred fifty".