67426657213 has 2 divisors, whose sum is σ = 67426657214. Its totient is φ = 67426657212.

The previous prime is 67426657211. The next prime is 67426657231. The reversal of 67426657213 is 31275662476.

Together with next prime (67426657231) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66996592569 + 430064644 = 258837^2 + 20738^2 .

It is a cyclic number.

It is not a de Polignac number, because 67426657213 - 2¹ = 67426657211 is a prime.

Together with 67426657211, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67426657211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33713328606 + 33713328607.

It is an arithmetic number, because the mean of its divisors is an integer number (33713328607).

Almost surely, 2^67426657213 is an apocalyptic number.

It is an amenable number.

67426657213 is a deficient number, since it is larger than the sum of its proper divisors (1).

67426657213 is an equidigital number, since it uses as much as digits as its factorization.

67426657213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2540160, while the sum is 49.

The spelling of 67426657213 in words is "sixty-seven billion, four hundred twenty-six million, six hundred fifty-seven thousand, two hundred thirteen".