71956256855 has 16 divisors (see below), whose sum is σ = 101089767744. Its totient is φ = 48137982720.

The previous prime is 71956256851. The next prime is 71956256947. The reversal of 71956256855 is 55865265917.

It is not a de Polignac number, because 71956256855 - 2² = 71956256851 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 71956256794 and 71956256803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71956256851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25070432 + ... + 25073301.

It is an arithmetic number, because the mean of its divisors is an integer number (6318110484).

Almost surely, 2^71956256855 is an apocalyptic number.

71956256855 is a deficient number, since it is larger than the sum of its proper divisors (29133510889).

71956256855 is a wasteful number, since it uses less digits than its factorization.

71956256855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50143786.

The product of its digits is 22680000, while the sum is 59.

The spelling of 71956256855 in words is "seventy-one billion, nine hundred fifty-six million, two hundred fifty-six thousand, eight hundred fifty-five".