243131660002166 has 16 divisors (see below), whose sum is σ = 392806390410000. Its totient is φ = 112198827357408.

The previous prime is 243131660002117. The next prime is 243131660002229. The reversal of 243131660002166 is 661200066131342.

It is a super-2 number, since 2×243131660002166² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

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, 657517916 + ... + 657887583.

It is an arithmetic number, because the mean of its divisors is an integer number (24550399400625).

Almost surely, 2^{243131660002166} is an apocalyptic number.

243131660002166 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

243131660002166 is a deficient number, since it is larger than the sum of its proper divisors (149674730407834).

243131660002166 is a wasteful number, since it uses less digits than its factorization.

243131660002166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1315412623.

The product of its (nonzero) digits is 186624, while the sum is 41.

The spelling of 243131660002166 in words is "two hundred forty-three trillion, one hundred thirty-one billion, six hundred sixty million, two thousand, one hundred sixty-six".