67764152917 has 2 divisors, whose sum is σ = 67764152918. Its totient is φ = 67764152916.

The previous prime is 67764152899. The next prime is 67764152921. The reversal of 67764152917 is 71925146776.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38954522161 + 28809630756 = 197369^2 + 169734^2 .

It is a cyclic number.

It is not a de Polignac number, because 67764152917 - 2⁷ = 67764152789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67764152947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33882076458 + 33882076459.

It is an arithmetic number, because the mean of its divisors is an integer number (33882076459).

Almost surely, 2^67764152917 is an apocalyptic number.

It is an amenable number.

67764152917 is a deficient number, since it is larger than the sum of its proper divisors (1).

67764152917 is an equidigital number, since it uses as much as digits as its factorization.

67764152917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4445280, while the sum is 55.

The spelling of 67764152917 in words is "sixty-seven billion, seven hundred sixty-four million, one hundred fifty-two thousand, nine hundred seventeen".