71580798196 has 24 divisors (see below), whose sum is σ = 132646570056. Its totient is φ = 33682145280.

The previous prime is 71580798143. The next prime is 71580798199. The reversal of 71580798196 is 69189708517.

It can be written as a sum of positive squares in 4 ways, for example, as 8058652900 + 63522145296 = 89770^2 + 252036^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71580798199) 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, 874830 + ... + 953146.

It is an arithmetic number, because the mean of its divisors is an integer number (5526940419).

Almost surely, 2^71580798196 is an apocalyptic number.

It is an amenable number.

71580798196 is a deficient number, since it is larger than the sum of its proper divisors (61065771860).

71580798196 is a wasteful number, since it uses less digits than its factorization.

71580798196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91779 (or 91777 counting only the distinct ones).

The product of its (nonzero) digits is 7620480, while the sum is 61.

The spelling of 71580798196 in words is "seventy-one billion, five hundred eighty million, seven hundred ninety-eight thousand, one hundred ninety-six".