32391273617 has 2 divisors, whose sum is σ = 32391273618. Its totient is φ = 32391273616.

The previous prime is 32391273571. The next prime is 32391273667. The reversal of 32391273617 is 71637219323.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32385241681 + 6031936 = 179959^2 + 2456^2 .

It is a cyclic number.

It is not a de Polignac number, because 32391273617 - 2¹⁴ = 32391257233 is a prime.

It is not a weakly prime, because it can be changed into another prime (32391273667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16195636808 + 16195636809.

It is an arithmetic number, because the mean of its divisors is an integer number (16195636809).

Almost surely, 2^32391273617 is an apocalyptic number.

It is an amenable number.

32391273617 is a deficient number, since it is larger than the sum of its proper divisors (1).

32391273617 is an equidigital number, since it uses as much as digits as its factorization.

32391273617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 285768, while the sum is 44.

The spelling of 32391273617 in words is "thirty-two billion, three hundred ninety-one million, two hundred seventy-three thousand, six hundred seventeen".