131737605666 has 32 divisors (see below), whose sum is σ = 268351686720. Its totient is φ = 43102071744.

The previous prime is 131737605661. The next prime is 131737605677. The reversal of 131737605666 is 666506737131.

It is a super-2 number, since 2×131737605666² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131737605661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53785 + ... + 516108.

It is an arithmetic number, because the mean of its divisors is an integer number (8385990210).

Almost surely, 2^131737605666 is an apocalyptic number.

131737605666 is an abundant number, since it is smaller than the sum of its proper divisors (136614081054).

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

131737605666 is a wasteful number, since it uses less digits than its factorization.

131737605666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570610.

The product of its (nonzero) digits is 2857680, while the sum is 51.

The spelling of 131737605666 in words is "one hundred thirty-one billion, seven hundred thirty-seven million, six hundred five thousand, six hundred sixty-six".