71628812407 has 2 divisors, whose sum is σ = 71628812408. Its totient is φ = 71628812406.

The previous prime is 71628812369. The next prime is 71628812417. The reversal of 71628812407 is 70421882617.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71628812407 - 2¹¹ = 71628810359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71628812417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35814406203 + 35814406204.

It is an arithmetic number, because the mean of its divisors is an integer number (35814406204).

Almost surely, 2^71628812407 is an apocalyptic number.

71628812407 is a deficient number, since it is larger than the sum of its proper divisors (1).

71628812407 is an equidigital number, since it uses as much as digits as its factorization.

71628812407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 301056, while the sum is 46.

The spelling of 71628812407 in words is "seventy-one billion, six hundred twenty-eight million, eight hundred twelve thousand, four hundred seven".