71723155715 has 8 divisors (see below), whose sum is σ = 86085521808. Its totient is φ = 57366701280.

The previous prime is 71723155681. The next prime is 71723155733. The reversal of 71723155715 is 51755132717.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 71723155715 - 2⁸ = 71723155459 is a prime.

It is a super-2 number, since 2×71723155715² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1451177 + ... + 1499786.

It is an arithmetic number, because the mean of its divisors is an integer number (10760690226).

Almost surely, 2^71723155715 is an apocalyptic number.

71723155715 is a deficient number, since it is larger than the sum of its proper divisors (14362366093).

71723155715 is a wasteful number, since it uses less digits than its factorization.

71723155715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2955829.

The product of its digits is 257250, while the sum is 44.

The spelling of 71723155715 in words is "seventy-one billion, seven hundred twenty-three million, one hundred fifty-five thousand, seven hundred fifteen".