71631368063 has 2 divisors, whose sum is σ = 71631368064. Its totient is φ = 71631368062.

The previous prime is 71631368059. The next prime is 71631368069. The reversal of 71631368063 is 36086313617.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71631368063 - 2² = 71631368059 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71631368069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35815684031 + 35815684032.

It is an arithmetic number, because the mean of its divisors is an integer number (35815684032).

Almost surely, 2^71631368063 is an apocalyptic number.

71631368063 is a deficient number, since it is larger than the sum of its proper divisors (1).

71631368063 is an equidigital number, since it uses as much as digits as its factorization.

71631368063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 44.

The spelling of 71631368063 in words is "seventy-one billion, six hundred thirty-one million, three hundred sixty-eight thousand, sixty-three".