43221041553 has 32 divisors (see below), whose sum is σ = 61793107200. Its totient is φ = 26869287168.

The previous prime is 43221041533. The next prime is 43221041561. The reversal of 43221041553 is 35514012234.

It is a de Polignac number, because none of the positive numbers 2^k-43221041553 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43221041553.

It is not an unprimeable number, because it can be changed into a prime (43221041533) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1593100 + ... + 1620002.

It is an arithmetic number, because the mean of its divisors is an integer number (1931034600).

Almost surely, 2^43221041553 is an apocalyptic number.

It is an amenable number.

43221041553 is a deficient number, since it is larger than the sum of its proper divisors (18572065647).

43221041553 is a wasteful number, since it uses less digits than its factorization.

43221041553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27066 (or 27032 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 43221041553 its reverse (35514012234), we get a palindrome (78735053787).

The spelling of 43221041553 in words is "forty-three billion, two hundred twenty-one million, forty-one thousand, five hundred fifty-three".