32540501491 has 2 divisors, whose sum is σ = 32540501492. Its totient is φ = 32540501490.

The previous prime is 32540501489. The next prime is 32540501503. The reversal of 32540501491 is 19410504523.

It is a weak prime.

It is an emirp because it is prime and its reverse (19410504523) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 32540501491 - 2¹ = 32540501489 is a prime.

Together with 32540501489, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (32541501491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16270250745 + 16270250746.

It is an arithmetic number, because the mean of its divisors is an integer number (16270250746).

Almost surely, 2^32540501491 is an apocalyptic number.

32540501491 is a deficient number, since it is larger than the sum of its proper divisors (1).

32540501491 is an equidigital number, since it uses as much as digits as its factorization.

32540501491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 34.

The spelling of 32540501491 in words is "thirty-two billion, five hundred forty million, five hundred one thousand, four hundred ninety-one".