71180220563 has 2 divisors, whose sum is σ = 71180220564. Its totient is φ = 71180220562.

The previous prime is 71180220541. The next prime is 71180220571. The reversal of 71180220563 is 36502208117.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71180220563 is a prime.

It is not a weakly prime, because it can be changed into another prime (71180220533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35590110281 + 35590110282.

It is an arithmetic number, because the mean of its divisors is an integer number (35590110282).

Almost surely, 2^71180220563 is an apocalyptic number.

71180220563 is a deficient number, since it is larger than the sum of its proper divisors (1).

71180220563 is an equidigital number, since it uses as much as digits as its factorization.

71180220563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 35.

The spelling of 71180220563 in words is "seventy-one billion, one hundred eighty million, two hundred twenty thousand, five hundred sixty-three".