71712410155 has 4 divisors (see below), whose sum is σ = 86054892192. Its totient is φ = 57369928120.

The previous prime is 71712410153. The next prime is 71712410177. The reversal of 71712410155 is 55101421717.

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

It is not a de Polignac number, because 71712410155 - 2¹ = 71712410153 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71712410155.

It is not an unprimeable number, because it can be changed into a prime (71712410153) 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, 7171241011 + ... + 7171241020.

It is an arithmetic number, because the mean of its divisors is an integer number (21513723048).

Almost surely, 2^71712410155 is an apocalyptic number.

71712410155 is a deficient number, since it is larger than the sum of its proper divisors (14342482037).

71712410155 is a wasteful number, since it uses less digits than its factorization.

71712410155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14342482036.

The product of its (nonzero) digits is 9800, while the sum is 34.

The spelling of 71712410155 in words is "seventy-one billion, seven hundred twelve million, four hundred ten thousand, one hundred fifty-five".