166661500001512 has 32 divisors (see below), whose sum is σ = 312694662107520. Its totient is φ = 83276265335040.

The previous prime is 166661500001509. The next prime is 166661500001527. The reversal of 166661500001512 is 215100005166661.

It is a super-2 number, since 2×166661500001512² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157084087 + ... + 158141497.

It is an arithmetic number, because the mean of its divisors is an integer number (9771708190860).

Almost surely, 2^{166661500001512} is an apocalyptic number.

It is an amenable number.

166661500001512 is a deficient number, since it is larger than the sum of its proper divisors (146033162106008).

166661500001512 is a wasteful number, since it uses less digits than its factorization.

166661500001512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1070281 (or 1070277 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 40.

The spelling of 166661500001512 in words is "one hundred sixty-six trillion, six hundred sixty-one billion, five hundred million, one thousand, five hundred twelve".