67642490837 has 2 divisors, whose sum is σ = 67642490838. Its totient is φ = 67642490836.

The previous prime is 67642490813. The next prime is 67642490893. The reversal of 67642490837 is 73809424676.

It is an a-pointer prime, because the next prime (67642490893) can be obtained adding 67642490837 to its sum of digits (56).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66732322276 + 910168561 = 258326^2 + 30169^2 .

It is a cyclic number.

It is not a de Polignac number, because 67642490837 - 2¹⁴ = 67642474453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67642490437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33821245418 + 33821245419.

It is an arithmetic number, because the mean of its divisors is an integer number (33821245419).

Almost surely, 2^67642490837 is an apocalyptic number.

It is an amenable number.

67642490837 is a deficient number, since it is larger than the sum of its proper divisors (1).

67642490837 is an equidigital number, since it uses as much as digits as its factorization.

67642490837 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12192768, while the sum is 56.

The spelling of 67642490837 in words is "sixty-seven billion, six hundred forty-two million, four hundred ninety thousand, eight hundred thirty-seven".