67006800437 has 2 divisors, whose sum is σ = 67006800438. Its totient is φ = 67006800436.

The previous prime is 67006800401. The next prime is 67006800439. The reversal of 67006800437 is 73400860076.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58675857361 + 8330943076 = 242231^2 + 91274^2 .

It is a cyclic number.

It is not a de Polignac number, because 67006800437 - 2⁸ = 67006800181 is a prime.

It is a super-2 number, since 2×67006800437² (a number of 22 digits) contains 22 as substring.

Together with 67006800439, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 67006800394 and 67006800403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67006800439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33503400218 + 33503400219.

It is an arithmetic number, because the mean of its divisors is an integer number (33503400219).

Almost surely, 2^67006800437 is an apocalyptic number.

It is an amenable number.

67006800437 is a deficient number, since it is larger than the sum of its proper divisors (1).

67006800437 is an equidigital number, since it uses as much as digits as its factorization.

67006800437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 169344, while the sum is 41.

The spelling of 67006800437 in words is "sixty-seven billion, six million, eight hundred thousand, four hundred thirty-seven".