155533232231443 has 12 divisors (see below), whose sum is σ = 171004258447960. Its totient is φ = 141355601513280.

The previous prime is 155533232231431. The next prime is 155533232231467. The reversal of 155533232231443 is 344132232335551.

155533232231443 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-155533232231443 is a prime.

It is a super-2 number, since 2×155533232231443² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 155533232231393 and 155533232231402.

It is not an unprimeable number, because it can be changed into a prime (155533232231473) 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, 173396133 + ... + 174290806.

Almost surely, 2^{155533232231443} is an apocalyptic number.

155533232231443 is a deficient number, since it is larger than the sum of its proper divisors (15471026216517).

155533232231443 is a wasteful number, since it uses less digits than its factorization.

155533232231443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347690658 (or 347690647 counting only the distinct ones).

The product of its digits is 3888000, while the sum is 46.

Adding to 155533232231443 its reverse (344132232335551), we get a palindrome (499665464566994).

The spelling of 155533232231443 in words is "one hundred fifty-five trillion, five hundred thirty-three billion, two hundred thirty-two million, two hundred thirty-one thousand, four hundred forty-three".