67414641457 has 2 divisors, whose sum is σ = 67414641458. Its totient is φ = 67414641456.

The previous prime is 67414641421. The next prime is 67414641491. The reversal of 67414641457 is 75414641476.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36071125776 + 31343515681 = 189924^2 + 177041^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67414641457 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 67414641457.

It is not a weakly prime, because it can be changed into another prime (67414641157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33707320728 + 33707320729.

It is an arithmetic number, because the mean of its divisors is an integer number (33707320729).

Almost surely, 2^67414641457 is an apocalyptic number.

It is an amenable number.

67414641457 is a deficient number, since it is larger than the sum of its proper divisors (1).

67414641457 is an equidigital number, since it uses as much as digits as its factorization.

67414641457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2257920, while the sum is 49.

The spelling of 67414641457 in words is "sixty-seven billion, four hundred fourteen million, six hundred forty-one thousand, four hundred fifty-seven".