71297317052 has 12 divisors (see below), whose sum is σ = 134368020696. Its totient is φ = 32906454000.

The previous prime is 71297317001. The next prime is 71297317079. The reversal of 71297317052 is 25071379217.

It is a junction number, because it is equal to n+sod(n) for n = 71297316994 and 71297317012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 685551074 + ... + 685551177.

It is an arithmetic number, because the mean of its divisors is an integer number (11197335058).

Almost surely, 2^71297317052 is an apocalyptic number.

It is an amenable number.

71297317052 is a deficient number, since it is larger than the sum of its proper divisors (63070703644).

71297317052 is a wasteful number, since it uses less digits than its factorization.

71297317052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1371102268 (or 1371102266 counting only the distinct ones).

The product of its (nonzero) digits is 185220, while the sum is 44.

The spelling of 71297317052 in words is "seventy-one billion, two hundred ninety-seven million, three hundred seventeen thousand, fifty-two".