71723276065 has 32 divisors (see below), whose sum is σ = 99009630720. Its totient is φ = 48858883584.

The previous prime is 71723276059. The next prime is 71723276083. The reversal of 71723276065 is 56067232717.

It is a happy number.

It is not a de Polignac number, because 71723276065 - 2³ = 71723276057 is a prime.

It is a super-3 number, since 3×71723276065³ (a number of 34 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17351739 + ... + 17355871.

It is an arithmetic number, because the mean of its divisors is an integer number (3094050960).

Almost surely, 2^71723276065 is an apocalyptic number.

It is an amenable number.

71723276065 is a deficient number, since it is larger than the sum of its proper divisors (27286354655).

71723276065 is a wasteful number, since it uses less digits than its factorization.

71723276065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7281.

The product of its (nonzero) digits is 740880, while the sum is 46.

The spelling of 71723276065 in words is "seventy-one billion, seven hundred twenty-three million, two hundred seventy-six thousand, sixty-five".