131752747616221 has 2 divisors, whose sum is σ = 131752747616222. Its totient is φ = 131752747616220.

The previous prime is 131752747616201. The next prime is 131752747616239. The reversal of 131752747616221 is 122616747257131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83932825728196 + 47819921888025 = 9161486^2 + 6915195^2 .

It is a cyclic number.

It is not a de Polignac number, because 131752747616221 - 2²⁵ = 131752714061789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131752747616201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65876373808110 + 65876373808111.

It is an arithmetic number, because the mean of its divisors is an integer number (65876373808111).

Almost surely, 2^{131752747616221} is an apocalyptic number.

It is an amenable number.

131752747616221 is a deficient number, since it is larger than the sum of its proper divisors (1).

131752747616221 is an equidigital number, since it uses as much as digits as its factorization.

131752747616221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5927040, while the sum is 55.

The spelling of 131752747616221 in words is "one hundred thirty-one trillion, seven hundred fifty-two billion, seven hundred forty-seven million, six hundred sixteen thousand, two hundred twenty-one".