67632809407 has 2 divisors, whose sum is σ = 67632809408. Its totient is φ = 67632809406.

The previous prime is 67632809371. The next prime is 67632809429. The reversal of 67632809407 is 70490823676.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67632809407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67632809467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33816404703 + 33816404704.

It is an arithmetic number, because the mean of its divisors is an integer number (33816404704).

Almost surely, 2^67632809407 is an apocalyptic number.

67632809407 is a deficient number, since it is larger than the sum of its proper divisors (1).

67632809407 is an equidigital number, since it uses as much as digits as its factorization.

67632809407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3048192, while the sum is 52.

The spelling of 67632809407 in words is "sixty-seven billion, six hundred thirty-two million, eight hundred nine thousand, four hundred seven".