1664216536132 has 12 divisors (see below), whose sum is σ = 3012805798380. Its totient is φ = 803414879456.

The previous prime is 1664216536111. The next prime is 1664216536187. The reversal of 1664216536132 is 2316356124661.

It can be written as a sum of positive squares in 2 ways, for example, as 421312635396 + 1242903900736 = 649086^2 + 1114856^2 .

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, 7173347023 + ... + 7173347254.

It is an arithmetic number, because the mean of its divisors is an integer number (251067149865).

Almost surely, 2^{1664216536132} is an apocalyptic number.

It is an amenable number.

1664216536132 is a deficient number, since it is larger than the sum of its proper divisors (1348589262248).

1664216536132 is a wasteful number, since it uses less digits than its factorization.

1664216536132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14346694310 (or 14346694308 counting only the distinct ones).

The product of its digits is 933120, while the sum is 46.

The spelling of 1664216536132 in words is "one trillion, six hundred sixty-four billion, two hundred sixteen million, five hundred thirty-six thousand, one hundred thirty-two".