71729461223 has 4 divisors (see below), whose sum is σ = 81976527120. Its totient is φ = 61482395328.

The previous prime is 71729461211. The next prime is 71729461273. The reversal of 71729461223 is 32216492717.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 71729461223 - 2¹⁶ = 71729395687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71729461273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5123532938 + ... + 5123532951.

It is an arithmetic number, because the mean of its divisors is an integer number (20494131780).

Almost surely, 2^71729461223 is an apocalyptic number.

71729461223 is a deficient number, since it is larger than the sum of its proper divisors (10247065897).

71729461223 is a wasteful number, since it uses less digits than its factorization.

71729461223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10247065896.

The product of its digits is 254016, while the sum is 44.

The spelling of 71729461223 in words is "seventy-one billion, seven hundred twenty-nine million, four hundred sixty-one thousand, two hundred twenty-three".