71775164203 has 2 divisors, whose sum is σ = 71775164204. Its totient is φ = 71775164202.

The previous prime is 71775164147. The next prime is 71775164221. The reversal of 71775164203 is 30246157717.

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-71775164203 is a prime.

It is a super-2 number, since 2×71775164203² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 71775164203.

It is not a weakly prime, because it can be changed into another prime (71775164243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35887582101 + 35887582102.

It is an arithmetic number, because the mean of its divisors is an integer number (35887582102).

Almost surely, 2^71775164203 is an apocalyptic number.

71775164203 is a deficient number, since it is larger than the sum of its proper divisors (1).

71775164203 is an equidigital number, since it uses as much as digits as its factorization.

71775164203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 246960, while the sum is 43.

The spelling of 71775164203 in words is "seventy-one billion, seven hundred seventy-five million, one hundred sixty-four thousand, two hundred three".