166959240442 has 16 divisors (see below), whose sum is σ = 251722440000. Its totient is φ = 83051844480.

The previous prime is 166959240439. The next prime is 166959240457. The reversal of 166959240442 is 244042959661.

It is a self number, because there is not a number n which added to its sum of digits gives 166959240442.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6633642 + ... + 6658762.

It is an arithmetic number, because the mean of its divisors is an integer number (15732652500).

Almost surely, 2^166959240442 is an apocalyptic number.

166959240442 is a deficient number, since it is larger than the sum of its proper divisors (84763199558).

166959240442 is a wasteful number, since it uses less digits than its factorization.

166959240442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42021.

The product of its (nonzero) digits is 3732480, while the sum is 52.

The spelling of 166959240442 in words is "one hundred sixty-six billion, nine hundred fifty-nine million, two hundred forty thousand, four hundred forty-two".