66312662110605 has 32 divisors (see below), whose sum is σ = 117889614729600. Its totient is φ = 35366621832576.

The previous prime is 66312662110483. The next prime is 66312662110619. The reversal of 66312662110605 is 50601126621366.

66312662110605 is a `hidden beast` number, since 6 + 6 + 3 + 1 + 2 + 6 + 6 + 21 + 10 + 605 = 666.

It is not a de Polignac number, because 66312662110605 - 2¹⁰ = 66312662109581 is a prime.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43610697 + ... + 45105633.

It is an arithmetic number, because the mean of its divisors is an integer number (3684050460300).

Almost surely, 2^{66312662110605} is an apocalyptic number.

It is an amenable number.

66312662110605 is a deficient number, since it is larger than the sum of its proper divisors (51576952618995).

66312662110605 is a wasteful number, since it uses less digits than its factorization.

66312662110605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1823530 (or 1823524 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The spelling of 66312662110605 in words is "sixty-six trillion, three hundred twelve billion, six hundred sixty-two million, one hundred ten thousand, six hundred five".