67640286499 has 2 divisors, whose sum is σ = 67640286500. Its totient is φ = 67640286498.

The previous prime is 67640286481. The next prime is 67640286509. The reversal of 67640286499 is 99468204676.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 67640286499 - 2³³ = 59050351907 is a prime.

It is not a weakly prime, because it can be changed into another prime (67640289499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33820143249 + 33820143250.

It is an arithmetic number, because the mean of its divisors is an integer number (33820143250).

Almost surely, 2^67640286499 is an apocalyptic number.

67640286499 is a deficient number, since it is larger than the sum of its proper divisors (1).

67640286499 is an equidigital number, since it uses as much as digits as its factorization.

67640286499 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31352832, while the sum is 61.

The spelling of 67640286499 in words is "sixty-seven billion, six hundred forty million, two hundred eighty-six thousand, four hundred ninety-nine".