166961043 has 24 divisors (see below), whose sum is σ = 244868832. Its totient is φ = 109611648.

The previous prime is 166961017. The next prime is 166961051. The reversal of 166961043 is 340169661.

It is not a de Polignac number, because 166961043 - 2¹⁰ = 166960019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 166960989 and 166961007.

It is not an unprimeable number, because it can be changed into a prime (166961083) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 215605 + ... + 216377.

It is an arithmetic number, because the mean of its divisors is an integer number (10202868).

Almost surely, 2^166961043 is an apocalyptic number.

166961043 is a deficient number, since it is larger than the sum of its proper divisors (77907789).

166961043 is a wasteful number, since it uses less digits than its factorization.

166961043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1115 (or 1112 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 166961043 is about 12921.3406038228. The cubic root of 166961043 is about 550.6450206572.

The spelling of 166961043 in words is "one hundred sixty-six million, nine hundred sixty-one thousand, forty-three".