68041482557 has 2 divisors, whose sum is σ = 68041482558. Its totient is φ = 68041482556.

The previous prime is 68041482527. The next prime is 68041482569. The reversal of 68041482557 is 75528414086.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42496173316 + 25545309241 = 206146^2 + 159829^2 .

It is a cyclic number.

It is not a de Polignac number, because 68041482557 - 2²⁴ = 68024705341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68041482527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34020741278 + 34020741279.

It is an arithmetic number, because the mean of its divisors is an integer number (34020741279).

Almost surely, 2^68041482557 is an apocalyptic number.

It is an amenable number.

68041482557 is a deficient number, since it is larger than the sum of its proper divisors (1).

68041482557 is an equidigital number, since it uses as much as digits as its factorization.

68041482557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2150400, while the sum is 50.

The spelling of 68041482557 in words is "sixty-eight billion, forty-one million, four hundred eighty-two thousand, five hundred fifty-seven".