71012727919 has 8 divisors (see below), whose sum is σ = 81159230880. Its totient is φ = 60866681856.

The previous prime is 71012727911. The next prime is 71012727931. The reversal of 71012727919 is 91972721017.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 71012727919 - 2³ = 71012727911 is a prime.

It is a super-2 number, since 2×71012727919² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71012727911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 338427 + ... + 506515.

It is an arithmetic number, because the mean of its divisors is an integer number (10144903860).

Almost surely, 2^71012727919 is an apocalyptic number.

71012727919 is a deficient number, since it is larger than the sum of its proper divisors (10146502961).

71012727919 is a wasteful number, since it uses less digits than its factorization.

71012727919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228449.

The product of its (nonzero) digits is 111132, while the sum is 46.

The spelling of 71012727919 in words is "seventy-one billion, twelve million, seven hundred twenty-seven thousand, nine hundred nineteen".