71642605603 has 2 divisors, whose sum is σ = 71642605604. Its totient is φ = 71642605602.

The previous prime is 71642605577. The next prime is 71642605651. The reversal of 71642605603 is 30650624617.

It is a weak prime.

It is an emirp because it is prime and its reverse (30650624617) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71642605603 - 2⁵ = 71642605571 is a prime.

It is not a weakly prime, because it can be changed into another prime (71642605663) 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, 35821302801 + 35821302802.

It is an arithmetic number, because the mean of its divisors is an integer number (35821302802).

Almost surely, 2^71642605603 is an apocalyptic number.

71642605603 is a deficient number, since it is larger than the sum of its proper divisors (1).

71642605603 is an equidigital number, since it uses as much as digits as its factorization.

71642605603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 40.

The spelling of 71642605603 in words is "seventy-one billion, six hundred forty-two million, six hundred five thousand, six hundred three".