71195491788 has 12 divisors (see below), whose sum is σ = 166122814200. Its totient is φ = 23731830592.

The previous prime is 71195491781. The next prime is 71195491867. The reversal of 71195491788 is 88719459117.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (71195491781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2966478813 + ... + 2966478836.

It is an arithmetic number, because the mean of its divisors is an integer number (13843567850).

Almost surely, 2^71195491788 is an apocalyptic number.

It is an amenable number.

71195491788 is an abundant number, since it is smaller than the sum of its proper divisors (94927322412).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71195491788 is a wasteful number, since it uses less digits than its factorization.

71195491788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5932957656 (or 5932957654 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 60.

The spelling of 71195491788 in words is "seventy-one billion, one hundred ninety-five million, four hundred ninety-one thousand, seven hundred eighty-eight".