131784898976617 has 2 divisors, whose sum is σ = 131784898976618. Its totient is φ = 131784898976616.

The previous prime is 131784898976593. The next prime is 131784898976669. The reversal of 131784898976617 is 716679898487131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 131470554855721 + 314344120896 = 11466061^2 + 560664^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131784898976617 is a prime.

It is not a weakly prime, because it can be changed into another prime (131784808976617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65892449488308 + 65892449488309.

It is an arithmetic number, because the mean of its divisors is an integer number (65892449488309).

Almost surely, 2^{131784898976617} is an apocalyptic number.

It is an amenable number.

131784898976617 is a deficient number, since it is larger than the sum of its proper divisors (1).

131784898976617 is an equidigital number, since it uses as much as digits as its factorization.

131784898976617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6145155072, while the sum is 85.

The spelling of 131784898976617 in words is "one hundred thirty-one trillion, seven hundred eighty-four billion, eight hundred ninety-eight million, nine hundred seventy-six thousand, six hundred seventeen".