71204640223 has 2 divisors, whose sum is σ = 71204640224. Its totient is φ = 71204640222.

The previous prime is 71204640211. The next prime is 71204640239. The reversal of 71204640223 is 32204640217.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71204640223 - 2¹⁷ = 71204509151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71204647223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35602320111 + 35602320112.

It is an arithmetic number, because the mean of its divisors is an integer number (35602320112).

Almost surely, 2^71204640223 is an apocalyptic number.

71204640223 is a deficient number, since it is larger than the sum of its proper divisors (1).

71204640223 is an equidigital number, since it uses as much as digits as its factorization.

71204640223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 31.

The spelling of 71204640223 in words is "seventy-one billion, two hundred four million, six hundred forty thousand, two hundred twenty-three".