132526781581 has 2 divisors, whose sum is σ = 132526781582. Its totient is φ = 132526781580.

The previous prime is 132526781557. The next prime is 132526781641. The reversal of 132526781581 is 185187625231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130363601481 + 2163180100 = 361059^2 + 46510^2 .

It is a cyclic number.

It is not a de Polignac number, because 132526781581 - 2⁵ = 132526781549 is a prime.

It is a super-2 number, since 2×132526781581² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (132526781501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66263390790 + 66263390791.

It is an arithmetic number, because the mean of its divisors is an integer number (66263390791).

Almost surely, 2^132526781581 is an apocalyptic number.

It is an amenable number.

132526781581 is a deficient number, since it is larger than the sum of its proper divisors (1).

132526781581 is an equidigital number, since it uses as much as digits as its factorization.

132526781581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 806400, while the sum is 49.

The spelling of 132526781581 in words is "one hundred thirty-two billion, five hundred twenty-six million, seven hundred eighty-one thousand, five hundred eighty-one".