202123543044 has 12 divisors (see below), whose sum is σ = 471621600464. Its totient is φ = 67374514344.

The previous prime is 202123543031. The next prime is 202123543067. The reversal of 202123543044 is 440345321202.

It is a tau number, because it is divible by the number of its divisors (12).

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 3 ways as a sum of consecutive naturals, for example, 8421814282 + ... + 8421814305.

Almost surely, 2^202123543044 is an apocalyptic number.

It is an amenable number.

202123543044 is an abundant number, since it is smaller than the sum of its proper divisors (269498057420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

202123543044 is a wasteful number, since it uses less digits than its factorization.

202123543044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16843628594 (or 16843628592 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 30.

Adding to 202123543044 its reverse (440345321202), we get a palindrome (642468864246).

The spelling of 202123543044 in words is "two hundred two billion, one hundred twenty-three million, five hundred forty-three thousand, forty-four".