2166424155 has 96 divisors (see below), whose sum is σ = 4578747264. Its totient is φ = 924991488.

The previous prime is 2166424153. The next prime is 2166424177. The reversal of 2166424155 is 5514246612.

2166424155 is a `hidden beast` number, since 2 + 1 + 6 + 642 + 4 + 1 + 5 + 5 = 666.

It is not a de Polignac number, because 2166424155 - 2¹ = 2166424153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2166424153) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 732159 + ... + 735111.

It is an arithmetic number, because the mean of its divisors is an integer number (47695284).

Almost surely, 2^2166424155 is an apocalyptic number.

2166424155 is an abundant number, since it is smaller than the sum of its proper divisors (2412323109).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2166424155 is a wasteful number, since it uses less digits than its factorization.

2166424155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3125 (or 3122 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 2166424155 is about 46544.8617464914. The cubic root of 2166424155 is about 1293.9410662291.

The spelling of 2166424155 in words is "two billion, one hundred sixty-six million, four hundred twenty-four thousand, one hundred fifty-five".