67113520757 has 2 divisors, whose sum is σ = 67113520758. Its totient is φ = 67113520756.

The previous prime is 67113520739. The next prime is 67113520769. The reversal of 67113520757 is 75702531176.

67113520757 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40897377361 + 26216143396 = 202231^2 + 161914^2 .

It is a cyclic number.

It is not a de Polignac number, because 67113520757 - 2⁸ = 67113520501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67113520717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33556760378 + 33556760379.

It is an arithmetic number, because the mean of its divisors is an integer number (33556760379).

Almost surely, 2^67113520757 is an apocalyptic number.

It is an amenable number.

67113520757 is a deficient number, since it is larger than the sum of its proper divisors (1).

67113520757 is an equidigital number, since it uses as much as digits as its factorization.

67113520757 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 308700, while the sum is 44.

The spelling of 67113520757 in words is "sixty-seven billion, one hundred thirteen million, five hundred twenty thousand, seven hundred fifty-seven".