6666236145 has 32 divisors (see below), whose sum is σ = 11872051200. Its totient is φ = 3549036672.

The previous prime is 6666236141. The next prime is 6666236147. The reversal of 6666236145 is 5416326666.

It is not a de Polignac number, because 6666236145 - 2² = 6666236141 is a prime.

It is a super-2 number, since 2×6666236145² = 88877408681808922050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 6666236145.

It is not an unprimeable number, because it can be changed into a prime (6666236141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33424 + ... + 120206.

It is an arithmetic number, because the mean of its divisors is an integer number (371001600).

Almost surely, 2^6666236145 is an apocalyptic number.

It is an amenable number.

6666236145 is a deficient number, since it is larger than the sum of its proper divisors (5205815055).

6666236145 is a wasteful number, since it uses less digits than its factorization.

6666236145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87366 (or 87360 counting only the distinct ones).

The product of its digits is 933120, while the sum is 45.

The square root of 6666236145 is about 81647.0216541914. The cubic root of 6666236145 is about 1882.0315432500.

The spelling of 6666236145 in words is "six billion, six hundred sixty-six million, two hundred thirty-six thousand, one hundred forty-five".