243131660002156 has 48 divisors (see below), whose sum is σ = 451496236004352. Its totient is φ = 114164098304000.

The previous prime is 243131660002117. The next prime is 243131660002229. The reversal of 243131660002156 is 651200066131342.

It is a super-2 number, since 2×243131660002156² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2443558200 + ... + 2443657696.

It is an arithmetic number, because the mean of its divisors is an integer number (9406171583424).

Almost surely, 2^{243131660002156} is an apocalyptic number.

It is an amenable number.

243131660002156 is a deficient number, since it is larger than the sum of its proper divisors (208364576002196).

243131660002156 is a wasteful number, since it uses less digits than its factorization.

243131660002156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177930 (or 177928 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 40.

The spelling of 243131660002156 in words is "two hundred forty-three trillion, one hundred thirty-one billion, six hundred sixty million, two thousand, one hundred fifty-six".