31666491126 has 24 divisors (see below), whose sum is σ = 71593806960. Its totient is φ = 10096562256.

The previous prime is 31666491097. The next prime is 31666491173. The reversal of 31666491126 is 62119466613.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38244141 + ... + 38244968.

It is an arithmetic number, because the mean of its divisors is an integer number (2983075290).

Almost surely, 2^31666491126 is an apocalyptic number.

31666491126 is an abundant number, since it is smaller than the sum of its proper divisors (39927315834).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31666491126 is a wasteful number, since it uses less digits than its factorization.

31666491126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76489140 (or 76489137 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The spelling of 31666491126 in words is "thirty-one billion, six hundred sixty-six million, four hundred ninety-one thousand, one hundred twenty-six".