166242264577 has 8 divisors (see below), whose sum is σ = 168387699200. Its totient is φ = 164097857664.

The previous prime is 166242264571. The next prime is 166242264589. The reversal of 166242264577 is 775462242661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 166242264577 - 2⁷ = 166242264449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166242264571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71368 + ... + 581014.

It is an arithmetic number, because the mean of its divisors is an integer number (21048462400).

Almost surely, 2^166242264577 is an apocalyptic number.

It is an amenable number.

166242264577 is a deficient number, since it is larger than the sum of its proper divisors (2145434623).

166242264577 is an equidigital number, since it uses as much as digits as its factorization.

166242264577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513855.

The product of its digits is 6773760, while the sum is 52.

The spelling of 166242264577 in words is "one hundred sixty-six billion, two hundred forty-two million, two hundred sixty-four thousand, five hundred seventy-seven".