166603343982 has 32 divisors (see below), whose sum is σ = 336591670272. Its totient is φ = 54970765344.

The previous prime is 166603343981. The next prime is 166603343987. The reversal of 166603343982 is 289343306661.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166603343981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1354428 + ... + 1472304.

It is an arithmetic number, because the mean of its divisors is an integer number (10518489696).

Almost surely, 2^166603343982 is an apocalyptic number.

166603343982 is an abundant number, since it is smaller than the sum of its proper divisors (169988326290).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166603343982 is a wasteful number, since it uses less digits than its factorization.

166603343982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120272.

The product of its (nonzero) digits is 3359232, while the sum is 51.

The spelling of 166603343982 in words is "one hundred sixty-six billion, six hundred three million, three hundred forty-three thousand, nine hundred eighty-two".