166243331041 has 8 divisors (see below), whose sum is σ = 176094505224. Its totient is φ = 156400174080.

The previous prime is 166243331029. The next prime is 166243331063. The reversal of 166243331041 is 140133342661.

It can be written as a sum of positive squares in 4 ways, for example, as 29413622016 + 136829709025 = 171504^2 + 369905^2 .

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

It is not a de Polignac number, because 166243331041 - 2²⁵ = 166209776609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 166243330988 and 166243331006.

It is not an unprimeable number, because it can be changed into a prime (166243331071) 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, 1961580 + ... + 2044573.

It is an arithmetic number, because the mean of its divisors is an integer number (22011813153).

Almost surely, 2^166243331041 is an apocalyptic number.

It is an amenable number.

166243331041 is a deficient number, since it is larger than the sum of its proper divisors (9851174183).

166243331041 is a wasteful number, since it uses less digits than its factorization.

166243331041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4008611.

The product of its (nonzero) digits is 31104, while the sum is 34.

The spelling of 166243331041 in words is "one hundred sixty-six billion, two hundred forty-three million, three hundred thirty-one thousand, forty-one".