11443432155 has 16 divisors (see below), whose sum is σ = 18453663744. Its totient is φ = 6055106400.

The previous prime is 11443432123. The next prime is 11443432193. The reversal of 11443432155 is 55123434411.

It is not a de Polignac number, because 11443432155 - 2⁵ = 11443432123 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3001621 + ... + 3005430.

It is an arithmetic number, because the mean of its divisors is an integer number (1153353984).

Almost surely, 2^11443432155 is an apocalyptic number.

11443432155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11443432155 is a deficient number, since it is larger than the sum of its proper divisors (7010231589).

11443432155 is a wasteful number, since it uses less digits than its factorization.

11443432155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6007186.

The product of its digits is 28800, while the sum is 33.

Adding to 11443432155 its reverse (55123434411), we get a palindrome (66566866566).

The spelling of 11443432155 in words is "eleven billion, four hundred forty-three million, four hundred thirty-two thousand, one hundred fifty-five".