32209901261 has 2 divisors, whose sum is σ = 32209901262. Its totient is φ = 32209901260.

The previous prime is 32209901249. The next prime is 32209901287. The reversal of 32209901261 is 16210990223.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29307385636 + 2902515625 = 171194^2 + 53875^2 .

It is a cyclic number.

It is not a de Polignac number, because 32209901261 - 2³⁴ = 15030032077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32209901461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16104950630 + 16104950631.

It is an arithmetic number, because the mean of its divisors is an integer number (16104950631).

Almost surely, 2^32209901261 is an apocalyptic number.

It is an amenable number.

32209901261 is a deficient number, since it is larger than the sum of its proper divisors (1).

32209901261 is an equidigital number, since it uses as much as digits as its factorization.

32209901261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 35.

The spelling of 32209901261 in words is "thirty-two billion, two hundred nine million, nine hundred one thousand, two hundred sixty-one".