1666500016136 has 8 divisors (see below), whose sum is σ = 3124687530270. Its totient is φ = 833250008064.

The previous prime is 1666500016133. The next prime is 1666500016141. The reversal of 1666500016136 is 6316100056661.

It can be written as a sum of positive squares in only one way, i.e., 883611280036 + 782888736100 = 940006^2 + 884810^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 1666500016093 and 1666500016102.

It is not an unprimeable number, because it can be changed into a prime (1666500016133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104156251001 + ... + 104156251016.

Almost surely, 2^{1666500016136} is an apocalyptic number.

It is an amenable number.

1666500016136 is a deficient number, since it is larger than the sum of its proper divisors (1458187514134).

1666500016136 is a wasteful number, since it uses less digits than its factorization.

1666500016136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208312502023 (or 208312502019 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 41.

The spelling of 1666500016136 in words is "one trillion, six hundred sixty-six billion, five hundred million, sixteen thousand, one hundred thirty-six".