661441023426124 has 12 divisors (see below), whose sum is σ = 1161292220284504. Its totient is φ = 329643246201984.

The previous prime is 661441023426091. The next prime is 661441023426143. The reversal of 661441023426124 is 421624320144166.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 269316376389 + ... + 269316378844.

Almost surely, 2^{661441023426124} is an apocalyptic number.

It is an amenable number.

661441023426124 is a deficient number, since it is larger than the sum of its proper divisors (499851196858380).

661441023426124 is a wasteful number, since it uses less digits than its factorization.

661441023426124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538632755544 (or 538632755542 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 46.

The spelling of 661441023426124 in words is "six hundred sixty-one trillion, four hundred forty-one billion, twenty-three million, four hundred twenty-six thousand, one hundred twenty-four".