71287725188 has 6 divisors (see below), whose sum is σ = 124753519086. Its totient is φ = 35643862592.

The previous prime is 71287725169. The next prime is 71287725221. The reversal of 71287725188 is 88152778217.

It can be written as a sum of positive squares in only one way, i.e., 41456217664 + 29831507524 = 203608^2 + 172718^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8910965645 + ... + 8910965652.

It is an arithmetic number, because the mean of its divisors is an integer number (20792253181).

Almost surely, 2^71287725188 is an apocalyptic number.

It is an amenable number.

71287725188 is a deficient number, since it is larger than the sum of its proper divisors (53465793898).

71287725188 is a wasteful number, since it uses less digits than its factorization.

71287725188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17821931301 (or 17821931299 counting only the distinct ones).

The product of its digits is 3512320, while the sum is 56.

The spelling of 71287725188 in words is "seventy-one billion, two hundred eighty-seven million, seven hundred twenty-five thousand, one hundred eighty-eight".