121666334590582 has 16 divisors (see below), whose sum is σ = 182917198458720. Its totient is φ = 60693938105472.

The previous prime is 121666334590561. The next prime is 121666334590639. The reversal of 121666334590582 is 285095433666121.

It is a self number, because there is not a number n which added to its sum of digits gives 121666334590582.

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, 86127438 + ... + 87528670.

It is an arithmetic number, because the mean of its divisors is an integer number (11432324903670).

Almost surely, 2^{121666334590582} is an apocalyptic number.

121666334590582 is a deficient number, since it is larger than the sum of its proper divisors (61250863868138).

121666334590582 is a wasteful number, since it uses less digits than its factorization.

121666334590582 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1500567.

The product of its (nonzero) digits is 55987200, while the sum is 61.

The spelling of 121666334590582 in words is "one hundred twenty-one trillion, six hundred sixty-six billion, three hundred thirty-four million, five hundred ninety thousand, five hundred eighty-two".