131717657018 has 64 divisors (see below), whose sum is σ = 213678203904. Its totient is φ = 60782400000.

The previous prime is 131717656991. The next prime is 131717657047. The reversal of 131717657018 is 810756717131.

It is a super-2 number, since 2×131717657018² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19653068 + ... + 19659768.

It is an arithmetic number, because the mean of its divisors is an integer number (3338721936).

Almost surely, 2^131717657018 is an apocalyptic number.

131717657018 is a deficient number, since it is larger than the sum of its proper divisors (81960546886).

131717657018 is a wasteful number, since it uses less digits than its factorization.

131717657018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6951.

The product of its (nonzero) digits is 246960, while the sum is 47.

The spelling of 131717657018 in words is "one hundred thirty-one billion, seven hundred seventeen million, six hundred fifty-seven thousand, eighteen".