71158929811 has 4 divisors (see below), whose sum is σ = 71269942824. Its totient is φ = 71047916800.

The previous prime is 71158929797. The next prime is 71158929857. The reversal of 71158929811 is 11892985117.

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

It is a cyclic number.

It is not a de Polignac number, because 71158929811 - 2⁷ = 71158929683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71158929911) 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, 55505545 + ... + 55506826.

It is an arithmetic number, because the mean of its divisors is an integer number (17817485706).

Almost surely, 2^71158929811 is an apocalyptic number.

71158929811 is a deficient number, since it is larger than the sum of its proper divisors (111013013).

71158929811 is a wasteful number, since it uses less digits than its factorization.

71158929811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111013012.

The product of its digits is 362880, while the sum is 52.

The spelling of 71158929811 in words is "seventy-one billion, one hundred fifty-eight million, nine hundred twenty-nine thousand, eight hundred eleven".