66645606341363 has 8 divisors (see below), whose sum is σ = 76766142738432. Its totient is φ = 56675003817096.

The previous prime is 66645606341357. The next prime is 66645606341393. The reversal of 66645606341363 is 36314360654666.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66645606341363 - 2¹² = 66645606337267 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66645606341393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37483467245 + ... + 37483469022.

It is an arithmetic number, because the mean of its divisors is an integer number (9595767842304).

Almost surely, 2^{66645606341363} is an apocalyptic number.

66645606341363 is a deficient number, since it is larger than the sum of its proper divisors (10120536397069).

66645606341363 is a wasteful number, since it uses less digits than its factorization.

66645606341363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74966936401.

The product of its (nonzero) digits is 100776960, while the sum is 59.

The spelling of 66645606341363 in words is "sixty-six trillion, six hundred forty-five billion, six hundred six million, three hundred forty-one thousand, three hundred sixty-three".