67115393025949 has 2 divisors, whose sum is σ = 67115393025950. Its totient is φ = 67115393025948.

The previous prime is 67115393025859. The next prime is 67115393025971. The reversal of 67115393025949 is 94952039351176.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43770000492100 + 23345392533849 = 6615890^2 + 4831707^2 .

It is a cyclic number.

It is not a de Polignac number, because 67115393025949 - 2²¹ = 67115390928797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67115390025949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33557696512974 + 33557696512975.

It is an arithmetic number, because the mean of its divisors is an integer number (33557696512975).

Almost surely, 2^{67115393025949} is an apocalyptic number.

It is an amenable number.

67115393025949 is a deficient number, since it is larger than the sum of its proper divisors (1).

67115393025949 is an equidigital number, since it uses as much as digits as its factorization.

67115393025949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55112400, while the sum is 64.

The spelling of 67115393025949 in words is "sixty-seven trillion, one hundred fifteen billion, three hundred ninety-three million, twenty-five thousand, nine hundred forty-nine".