131718486850 has 12 divisors (see below), whose sum is σ = 244996385634. Its totient is φ = 52687394720.

The previous prime is 131718486847. The next prime is 131718486941. The reversal of 131718486850 is 58684817131.

It can be written as a sum of positive squares in 3 ways, for example, as 113453775241 + 18264711609 = 336829^2 + 135147^2 .

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 1317184819 + ... + 1317184918.

Almost surely, 2^131718486850 is an apocalyptic number.

131718486850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131718486850 is a deficient number, since it is larger than the sum of its proper divisors (113277898784).

131718486850 is a wasteful number, since it uses less digits than its factorization.

131718486850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2634369749 (or 2634369744 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 52.

The spelling of 131718486850 in words is "one hundred thirty-one billion, seven hundred eighteen million, four hundred eighty-six thousand, eight hundred fifty".