71627673613 has 2 divisors, whose sum is σ = 71627673614. Its totient is φ = 71627673612.

The previous prime is 71627673547. The next prime is 71627673631. The reversal of 71627673613 is 31637672617.

Together with next prime (71627673631) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71354697129 + 272976484 = 267123^2 + 16522^2 .

It is a cyclic number.

It is not a de Polignac number, because 71627673613 - 2³³ = 63037739021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71627673413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35813836806 + 35813836807.

It is an arithmetic number, because the mean of its divisors is an integer number (35813836807).

Almost surely, 2^71627673613 is an apocalyptic number.

It is an amenable number.

71627673613 is a deficient number, since it is larger than the sum of its proper divisors (1).

71627673613 is an equidigital number, since it uses as much as digits as its factorization.

71627673613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1333584, while the sum is 49.

The spelling of 71627673613 in words is "seventy-one billion, six hundred twenty-seven million, six hundred seventy-three thousand, six hundred thirteen".