71188278813 has 8 divisors (see below), whose sum is σ = 105464116800. Its totient is φ = 47458852524.

The previous prime is 71188278797. The next prime is 71188278839. The reversal of 71188278813 is 31887288117.

It is not a de Polignac number, because 71188278813 - 2⁴ = 71188278797 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71188278813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71188278113) 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, 1318301433 + ... + 1318301486.

It is an arithmetic number, because the mean of its divisors is an integer number (13183014600).

Almost surely, 2^71188278813 is an apocalyptic number.

It is an amenable number.

71188278813 is a deficient number, since it is larger than the sum of its proper divisors (34275837987).

71188278813 is a wasteful number, since it uses less digits than its factorization.

71188278813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2636602928 (or 2636602922 counting only the distinct ones).

The product of its digits is 1204224, while the sum is 54.

The spelling of 71188278813 in words is "seventy-one billion, one hundred eighty-eight million, two hundred seventy-eight thousand, eight hundred thirteen".