32238863581 has 2 divisors, whose sum is σ = 32238863582. Its totient is φ = 32238863580.

The previous prime is 32238863507. The next prime is 32238863611. The reversal of 32238863581 is 18536883223.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28101157956 + 4137705625 = 167634^2 + 64325^2 .

It is a cyclic number.

It is not a de Polignac number, because 32238863581 - 2¹¹ = 32238861533 is a prime.

It is a super-2 number, since 2×32238863581² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32238863081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16119431790 + 16119431791.

It is an arithmetic number, because the mean of its divisors is an integer number (16119431791).

Almost surely, 2^32238863581 is an apocalyptic number.

It is an amenable number.

32238863581 is a deficient number, since it is larger than the sum of its proper divisors (1).

32238863581 is an equidigital number, since it uses as much as digits as its factorization.

32238863581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1658880, while the sum is 49.

The spelling of 32238863581 in words is "thirty-two billion, two hundred thirty-eight million, eight hundred sixty-three thousand, five hundred eighty-one".