60640233281 has 2 divisors, whose sum is σ = 60640233282. Its totient is φ = 60640233280.

The previous prime is 60640233259. The next prime is 60640233289. The reversal of 60640233281 is 18233204606.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60444681025 + 195552256 = 245855^2 + 13984^2 .

It is a cyclic number.

It is not a de Polignac number, because 60640233281 - 2³⁴ = 43460364097 is a prime.

It is a super-2 number, since 2×60640233281² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (60640233289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30320116640 + 30320116641.

It is an arithmetic number, because the mean of its divisors is an integer number (30320116641).

Almost surely, 2^60640233281 is an apocalyptic number.

It is an amenable number.

60640233281 is a deficient number, since it is larger than the sum of its proper divisors (1).

60640233281 is an equidigital number, since it uses as much as digits as its factorization.

60640233281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 35.

Adding to 60640233281 its reverse (18233204606), we get a palindrome (78873437887).

The spelling of 60640233281 in words is "sixty billion, six hundred forty million, two hundred thirty-three thousand, two hundred eighty-one".