166663696016 has 10 divisors (see below), whose sum is σ = 322910911062. Its totient is φ = 83331848000.

The previous prime is 166663696007. The next prime is 166663696033. The reversal of 166663696016 is 610696366661.

It can be written as a sum of positive squares in only one way, i.e., 151975225600 + 14688470416 = 389840^2 + 121196^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5208240485 + ... + 5208240516.

Almost surely, 2^166663696016 is an apocalyptic number.

166663696016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

166663696016 is a deficient number, since it is larger than the sum of its proper divisors (156247215046).

166663696016 is a wasteful number, since it uses less digits than its factorization.

166663696016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10416481009 (or 10416481003 counting only the distinct ones).

The product of its (nonzero) digits is 7558272, while the sum is 56.

The spelling of 166663696016 in words is "one hundred sixty-six billion, six hundred sixty-three million, six hundred ninety-six thousand, sixteen".