6155111223 has 12 divisors (see below), whose sum is σ = 8899093840. Its totient is φ = 4099540896.

The previous prime is 6155111219. The next prime is 6155111231. The reversal of 6155111223 is 3221115516.

6155111223 is a `hidden beast` number, since 615 + 5 + 11 + 12 + 23 = 666.

It is not a de Polignac number, because 6155111223 - 2² = 6155111219 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 (6155111723) 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, 312118 + ... + 331251.

Almost surely, 2^6155111223 is an apocalyptic number.

6155111223 is a deficient number, since it is larger than the sum of its proper divisors (2743982617).

6155111223 is a wasteful number, since it uses less digits than its factorization.

6155111223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644438 (or 644435 counting only the distinct ones).

The product of its digits is 1800, while the sum is 27.

The square root of 6155111223 is about 78454.5169062942. The cubic root of 6155111223 is about 1832.6462182512.

Adding to 6155111223 its reverse (3221115516), we get a palindrome (9376226739).

The spelling of 6155111223 in words is "six billion, one hundred fifty-five million, one hundred eleven thousand, two hundred twenty-three".