32491220491 has 2 divisors, whose sum is σ = 32491220492. Its totient is φ = 32491220490.

The previous prime is 32491220473. The next prime is 32491220507. The reversal of 32491220491 is 19402219423.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 32491220491 - 2⁵ = 32491220459 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 32491220491.

It is not a weakly prime, because it can be changed into another prime (32491220401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16245610245 + 16245610246.

It is an arithmetic number, because the mean of its divisors is an integer number (16245610246).

Almost surely, 2^32491220491 is an apocalyptic number.

32491220491 is a deficient number, since it is larger than the sum of its proper divisors (1).

32491220491 is an equidigital number, since it uses as much as digits as its factorization.

32491220491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 37.

The spelling of 32491220491 in words is "thirty-two billion, four hundred ninety-one million, two hundred twenty thousand, four hundred ninety-one".