71297853412 has 6 divisors (see below), whose sum is σ = 124771243478. Its totient is φ = 35648926704.

The previous prime is 71297853373. The next prime is 71297853469. The reversal of 71297853412 is 21435879217.

It can be written as a sum of positive squares in only one way, i.e., 59563331136 + 11734522276 = 244056^2 + 108326^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8912231673 + ... + 8912231680.

Almost surely, 2^71297853412 is an apocalyptic number.

It is an amenable number.

71297853412 is a deficient number, since it is larger than the sum of its proper divisors (53473390066).

71297853412 is a wasteful number, since it uses less digits than its factorization.

71297853412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17824463357 (or 17824463355 counting only the distinct ones).

The product of its digits is 846720, while the sum is 49.

The spelling of 71297853412 in words is "seventy-one billion, two hundred ninety-seven million, eight hundred fifty-three thousand, four hundred twelve".