32193681797 has 2 divisors, whose sum is σ = 32193681798. Its totient is φ = 32193681796.

The previous prime is 32193681749. The next prime is 32193681823. The reversal of 32193681797 is 79718639123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30768317281 + 1425364516 = 175409^2 + 37754^2 .

It is an emirp because it is prime and its reverse (79718639123) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32193681797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32193681497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16096840898 + 16096840899.

It is an arithmetic number, because the mean of its divisors is an integer number (16096840899).

Almost surely, 2^32193681797 is an apocalyptic number.

It is an amenable number.

32193681797 is a deficient number, since it is larger than the sum of its proper divisors (1).

32193681797 is an equidigital number, since it uses as much as digits as its factorization.

32193681797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3429216, while the sum is 56.

The spelling of 32193681797 in words is "thirty-two billion, one hundred ninety-three million, six hundred eighty-one thousand, seven hundred ninety-seven".