67161679213 has 2 divisors, whose sum is σ = 67161679214. Its totient is φ = 67161679212.

The previous prime is 67161679177. The next prime is 67161679223. The reversal of 67161679213 is 31297616176.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61232987209 + 5928692004 = 247453^2 + 76998^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67161679213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67161679223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33580839606 + 33580839607.

It is an arithmetic number, because the mean of its divisors is an integer number (33580839607).

Almost surely, 2^67161679213 is an apocalyptic number.

It is an amenable number.

67161679213 is a deficient number, since it is larger than the sum of its proper divisors (1).

67161679213 is an equidigital number, since it uses as much as digits as its factorization.

67161679213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 571536, while the sum is 49.

The spelling of 67161679213 in words is "sixty-seven billion, one hundred sixty-one million, six hundred seventy-nine thousand, two hundred thirteen".