203144444426 has 24 divisors (see below), whose sum is σ = 382784576160. Its totient is φ = 79147185480.

The previous prime is 203144444423. The next prime is 203144444453. The reversal of 203144444426 is 624444441302.

It is a super-2 number, since 2×203144444426² (a number of 23 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 203144444426.

It is not an unprimeable number, because it can be changed into a prime (203144444423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59958296 + ... + 59961683.

It is an arithmetic number, because the mean of its divisors is an integer number (15949357340).

Almost surely, 2^203144444426 is an apocalyptic number.

203144444426 is a deficient number, since it is larger than the sum of its proper divisors (179640131734).

203144444426 is a wasteful number, since it uses less digits than its factorization.

203144444426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119920010 (or 119919999 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 38.

Adding to 203144444426 its reverse (624444441302), we get a palindrome (827588885728).

The spelling of 203144444426 in words is "two hundred three billion, one hundred forty-four million, four hundred forty-four thousand, four hundred twenty-six".