2664125181 has 16 divisors (see below), whose sum is σ = 3951763200. Its totient is φ = 1773873504.

The previous prime is 2664125143. The next prime is 2664125197. The reversal of 2664125181 is 1815214662.

It is a happy number.

2664125181 is a `hidden beast` number, since 2 + 6 + 641 + 2 + 5 + 1 + 8 + 1 = 666.

It is not a de Polignac number, because 2664125181 - 2⁹ = 2664124669 is a prime.

It is a super-2 number, since 2×2664125181² = 14195125960076565522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2664125081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39141 + ... + 82826.

It is an arithmetic number, because the mean of its divisors is an integer number (246985200).

Almost surely, 2^2664125181 is an apocalyptic number.

It is an amenable number.

2664125181 is a deficient number, since it is larger than the sum of its proper divisors (1287638019).

2664125181 is a wasteful number, since it uses less digits than its factorization.

2664125181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122785 (or 122779 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 2664125181 is about 51615.1642543158. The cubic root of 2664125181 is about 1386.2818667381.

The spelling of 2664125181 in words is "two billion, six hundred sixty-four million, one hundred twenty-five thousand, one hundred eighty-one".