66075253258145 has 16 divisors (see below), whose sum is σ = 79620496293888. Its totient is φ = 52640080892160.

The previous prime is 66075253258097. The next prime is 66075253258169. The reversal of 66075253258145 is 54185235257066.

It is a happy number.

It is not a de Polignac number, because 66075253258145 - 2²² = 66075249063841 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88469162 + ... + 89212908.

It is an arithmetic number, because the mean of its divisors is an integer number (4976281018368).

Almost surely, 2^{66075253258145} is an apocalyptic number.

It is an amenable number.

66075253258145 is a deficient number, since it is larger than the sum of its proper divisors (13545243035743).

66075253258145 is a wasteful number, since it uses less digits than its factorization.

66075253258145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 817720.

The product of its (nonzero) digits is 60480000, while the sum is 59.

The spelling of 66075253258145 in words is "sixty-six trillion, seventy-five billion, two hundred fifty-three million, two hundred fifty-eight thousand, one hundred forty-five".