66555110066562 has 96 divisors (see below), whose sum is σ = 157887568500480. Its totient is φ = 20138717664000.

The previous prime is 66555110066537. The next prime is 66555110066579. The reversal of 66555110066562 is 26566001155566.

66555110066562 is a `hidden beast` number, since 6 + 6 + 5 + 5 + 5 + 1 + 10 + 0 + 66 + 562 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 66555110066499 and 66555110066508.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 2531923 + ... + 11811894.

It is an arithmetic number, because the mean of its divisors is an integer number (1644662171880).

Almost surely, 2^{66555110066562} is an apocalyptic number.

66555110066562 is an abundant number, since it is smaller than the sum of its proper divisors (91332458433918).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66555110066562 is a wasteful number, since it uses less digits than its factorization.

66555110066562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14344168 (or 14344165 counting only the distinct ones).

The product of its (nonzero) digits is 9720000, while the sum is 54.

The spelling of 66555110066562 in words is "sixty-six trillion, five hundred fifty-five billion, one hundred ten million, sixty-six thousand, five hundred sixty-two".