131740239566 has 32 divisors (see below), whose sum is σ = 215610262560. Its totient is φ = 60005044224.

The previous prime is 131740239511. The next prime is 131740239571. The reversal of 131740239566 is 665932047131.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 131740239566.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1971926 + ... + 2037638.

It is an arithmetic number, because the mean of its divisors is an integer number (6737820705).

Almost surely, 2^131740239566 is an apocalyptic number.

131740239566 is a deficient number, since it is larger than the sum of its proper divisors (83870022994).

131740239566 is a wasteful number, since it uses less digits than its factorization.

131740239566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66740.

The product of its (nonzero) digits is 816480, while the sum is 47.

The spelling of 131740239566 in words is "one hundred thirty-one billion, seven hundred forty million, two hundred thirty-nine thousand, five hundred sixty-six".