67346957861 has 2 divisors, whose sum is σ = 67346957862. Its totient is φ = 67346957860.

The previous prime is 67346957833. The next prime is 67346957929. The reversal of 67346957861 is 16875964376.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66465996100 + 880961761 = 257810^2 + 29681^2 .

It is a cyclic number.

It is not a de Polignac number, because 67346957861 - 2²² = 67342763557 is a prime.

It is a super-2 number, since 2×67346957861² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 67346957794 and 67346957803.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67346957831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33673478930 + 33673478931.

It is an arithmetic number, because the mean of its divisors is an integer number (33673478931).

Almost surely, 2^67346957861 is an apocalyptic number.

It is an amenable number.

67346957861 is a deficient number, since it is larger than the sum of its proper divisors (1).

67346957861 is an equidigital number, since it uses as much as digits as its factorization.

67346957861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45722880, while the sum is 62.

The spelling of 67346957861 in words is "sixty-seven billion, three hundred forty-six million, nine hundred fifty-seven thousand, eight hundred sixty-one".