155645443423 has 32 divisors (see below), whose sum is σ = 168163750080. Its totient is φ = 143536250880.

The previous prime is 155645443411. The next prime is 155645443427. The reversal of 155645443423 is 324344546551.

It is a cyclic number.

It is not a de Polignac number, because 155645443423 - 2⁵ = 155645443391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155645443427) 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, 112704193 + ... + 112705573.

It is an arithmetic number, because the mean of its divisors is an integer number (5255117190).

Almost surely, 2^155645443423 is an apocalyptic number.

155645443423 is a deficient number, since it is larger than the sum of its proper divisors (12518306657).

155645443423 is a wasteful number, since it uses less digits than its factorization.

155645443423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2107.

The product of its digits is 3456000, while the sum is 46.

Adding to 155645443423 its reverse (324344546551), we get a palindrome (479989989974).

The spelling of 155645443423 in words is "one hundred fifty-five billion, six hundred forty-five million, four hundred forty-three thousand, four hundred twenty-three".