66106060506 has 12 divisors (see below), whose sum is σ = 143229797802. Its totient is φ = 22035353496.

The previous prime is 66106060487. The next prime is 66106060511. The reversal of 66106060506 is 60506060166.

It can be written as a sum of positive squares in only one way, i.e., 61323093225 + 4782967281 = 247635^2 + 69159^2 .

It is a super-2 number, since 2×66106060506² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1836279441 + ... + 1836279476.

Almost surely, 2^66106060506 is an apocalyptic number.

66106060506 is an abundant number, since it is smaller than the sum of its proper divisors (77123737296).

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

66106060506 is a wasteful number, since it uses less digits than its factorization.

66106060506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3672558925 (or 3672558922 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The spelling of 66106060506 in words is "sixty-six billion, one hundred six million, sixty thousand, five hundred six".