166357507646627 has 4 divisors (see below), whose sum is σ = 181480917432696. Its totient is φ = 151234097860560.

The previous prime is 166357507646567. The next prime is 166357507646717. The reversal of 166357507646627 is 726646705753661.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 166357507646627 - 2⁶ = 166357507646563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166357507616627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7561704893018 + ... + 7561704893039.

It is an arithmetic number, because the mean of its divisors is an integer number (45370229358174).

Almost surely, 2^{166357507646627} is an apocalyptic number.

166357507646627 is a deficient number, since it is larger than the sum of its proper divisors (15123409786069).

166357507646627 is a wasteful number, since it uses less digits than its factorization.

166357507646627 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15123409786068.

The product of its (nonzero) digits is 1600300800, while the sum is 71.

The spelling of 166357507646627 in words is "one hundred sixty-six trillion, three hundred fifty-seven billion, five hundred seven million, six hundred forty-six thousand, six hundred twenty-seven".