166246141989 has 8 divisors (see below), whose sum is σ = 223353595872. Its totient is φ = 109984724720.

The previous prime is 166246141987. The next prime is 166246142009. The reversal of 166246141989 is 989141642661.

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 166246141989 - 2¹ = 166246141987 is a prime.

It is a super-2 number, since 2×166246141989² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166246141981) 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, 211508694 + ... + 211509479.

It is an arithmetic number, because the mean of its divisors is an integer number (27919199484).

Almost surely, 2^166246141989 is an apocalyptic number.

It is an amenable number.

166246141989 is a deficient number, since it is larger than the sum of its proper divisors (57107453883).

166246141989 is a wasteful number, since it uses less digits than its factorization.

166246141989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423018307.

The product of its digits is 4478976, while the sum is 57.

The spelling of 166246141989 in words is "one hundred sixty-six billion, two hundred forty-six million, one hundred forty-one thousand, nine hundred eighty-nine".