71247064807 has 2 divisors, whose sum is σ = 71247064808. Its totient is φ = 71247064806.

The previous prime is 71247064799. The next prime is 71247064883. The reversal of 71247064807 is 70846074217.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71247064807 - 2³ = 71247064799 is a prime.

It is a super-2 number, since 2×71247064807² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71247064907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35623532403 + 35623532404.

It is an arithmetic number, because the mean of its divisors is an integer number (35623532404).

Almost surely, 2^71247064807 is an apocalyptic number.

71247064807 is a deficient number, since it is larger than the sum of its proper divisors (1).

71247064807 is an equidigital number, since it uses as much as digits as its factorization.

71247064807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 526848, while the sum is 46.

The spelling of 71247064807 in words is "seventy-one billion, two hundred forty-seven million, sixty-four thousand, eight hundred seven".