71112747899 has 4 divisors (see below), whose sum is σ = 72174132264. Its totient is φ = 70051363536.

The previous prime is 71112747877. The next prime is 71112747973. The reversal of 71112747899 is 99874721117.

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 71112747899 - 2¹² = 71112743803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71112747499) 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, 530692082 + ... + 530692215.

It is an arithmetic number, because the mean of its divisors is an integer number (18043533066).

Almost surely, 2^71112747899 is an apocalyptic number.

71112747899 is a deficient number, since it is larger than the sum of its proper divisors (1061384365).

71112747899 is a wasteful number, since it uses less digits than its factorization.

71112747899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1061384364.

The product of its digits is 1778112, while the sum is 56.

The spelling of 71112747899 in words is "seventy-one billion, one hundred twelve million, seven hundred forty-seven thousand, eight hundred ninety-nine".