67612067797 has 2 divisors, whose sum is σ = 67612067798. Its totient is φ = 67612067796.

The previous prime is 67612067753. The next prime is 67612067801. The reversal of 67612067797 is 79776021676.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54214931281 + 13397136516 = 232841^2 + 115746^2 .

It is a cyclic number.

It is not a de Polignac number, because 67612067797 - 2⁷ = 67612067669 is a prime.

It is a super-2 number, since 2×67612067797² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67612067597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33806033898 + 33806033899.

It is an arithmetic number, because the mean of its divisors is an integer number (33806033899).

Almost surely, 2^67612067797 is an apocalyptic number.

It is an amenable number.

67612067797 is a deficient number, since it is larger than the sum of its proper divisors (1).

67612067797 is an equidigital number, since it uses as much as digits as its factorization.

67612067797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9335088, while the sum is 58.

The spelling of 67612067797 in words is "sixty-seven billion, six hundred twelve million, sixty-seven thousand, seven hundred ninety-seven".