132431221053661 has 2 divisors, whose sum is σ = 132431221053662. Its totient is φ = 132431221053660.

The previous prime is 132431221053653. The next prime is 132431221053683. The reversal of 132431221053661 is 166350122134231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74787731040100 + 57643490013561 = 8647990^2 + 7592331^2 .

It is a cyclic number.

It is not a de Polignac number, because 132431221053661 - 2³ = 132431221053653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (132431221153661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66215610526830 + 66215610526831.

It is an arithmetic number, because the mean of its divisors is an integer number (66215610526831).

Almost surely, 2^{132431221053661} is an apocalyptic number.

It is an amenable number.

132431221053661 is a deficient number, since it is larger than the sum of its proper divisors (1).

132431221053661 is an equidigital number, since it uses as much as digits as its factorization.

132431221053661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 155520, while the sum is 40.

Adding to 132431221053661 its reverse (166350122134231), we get a palindrome (298781343187892).

The spelling of 132431221053661 in words is "one hundred thirty-two trillion, four hundred thirty-one billion, two hundred twenty-one million, fifty-three thousand, six hundred sixty-one".