71611364387 has 2 divisors, whose sum is σ = 71611364388. Its totient is φ = 71611364386.

The previous prime is 71611364369. The next prime is 71611364437. The reversal of 71611364387 is 78346311617.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71611364387 - 2²⁰ = 71610315811 is a prime.

It is not a weakly prime, because it can be changed into another prime (71611364987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35805682193 + 35805682194.

It is an arithmetic number, because the mean of its divisors is an integer number (35805682194).

Almost surely, 2^71611364387 is an apocalyptic number.

71611364387 is a deficient number, since it is larger than the sum of its proper divisors (1).

71611364387 is an equidigital number, since it uses as much as digits as its factorization.

71611364387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 508032, while the sum is 47.

The spelling of 71611364387 in words is "seventy-one billion, six hundred eleven million, three hundred sixty-four thousand, three hundred eighty-seven".