662180773240145 has 4 divisors (see below), whose sum is σ = 794616927888180. Its totient is φ = 529744618592112.

The previous prime is 662180773240073. The next prime is 662180773240169. The reversal of 662180773240145 is 541042377081266.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 77508179800129 + 584672593440016 = 8803873^2 + 24180004^2 .

It is a cyclic number.

It is not a de Polignac number, because 662180773240145 - 2³⁶ = 662112053763409 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66218077324010 + ... + 66218077324019.

It is an arithmetic number, because the mean of its divisors is an integer number (198654231972045).

Almost surely, 2^{662180773240145} is an apocalyptic number.

It is an amenable number.

662180773240145 is a deficient number, since it is larger than the sum of its proper divisors (132436154648035).

662180773240145 is a wasteful number, since it uses less digits than its factorization.

662180773240145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132436154648034.

The product of its (nonzero) digits is 13547520, while the sum is 56.

The spelling of 662180773240145 in words is "six hundred sixty-two trillion, one hundred eighty billion, seven hundred seventy-three million, two hundred forty thousand, one hundred forty-five".