71722817045 has 16 divisors (see below), whose sum is σ = 94859650368. Its totient is φ = 51624291840.

The previous prime is 71722817003. The next prime is 71722817051. The reversal of 71722817045 is 54071822717.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-71722817045 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71722816987 and 71722817005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6716579 + ... + 6727248.

It is an arithmetic number, because the mean of its divisors is an integer number (5928728148).

Almost surely, 2^71722817045 is an apocalyptic number.

It is an amenable number.

71722817045 is a deficient number, since it is larger than the sum of its proper divisors (23136833323).

71722817045 is a wasteful number, since it uses less digits than its factorization.

71722817045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13443940.

The product of its (nonzero) digits is 219520, while the sum is 44.

The spelling of 71722817045 in words is "seventy-one billion, seven hundred twenty-two million, eight hundred seventeen thousand, forty-five".