4155855023 has 4 divisors (see below), whose sum is σ = 4161136440. Its totient is φ = 4150573608.

The previous prime is 4155855019. The next prime is 4155855049. The reversal of 4155855023 is 3205585514.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4155855023 - 2² = 4155855019 is a prime.

It is a super-2 number, since 2×4155855023² = 34542261944388661058, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4155855323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2639528 + ... + 2641101.

It is an arithmetic number, because the mean of its divisors is an integer number (1040284110).

Almost surely, 2^4155855023 is an apocalyptic number.

4155855023 is a deficient number, since it is larger than the sum of its proper divisors (5281417).

4155855023 is an equidigital number, since it uses as much as digits as its factorization.

4155855023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5281416.

The product of its (nonzero) digits is 120000, while the sum is 38.

The square root of 4155855023 is about 64465.9214081363. The cubic root of 4155855023 is about 1607.7559651642.

The spelling of 4155855023 in words is "four billion, one hundred fifty-five million, eight hundred fifty-five thousand, twenty-three".