71297455552 has 28 divisors (see below), whose sum is σ = 141500565360. Its totient is φ = 35643769856.

The previous prime is 71297455549. The next prime is 71297455591. The reversal of 71297455552 is 25555479217.

It is a self number, because there is not a number n which added to its sum of digits gives 71297455552.

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, 410088 + ... + 557464.

It is an arithmetic number, because the mean of its divisors is an integer number (5053591620).

Almost surely, 2^71297455552 is an apocalyptic number.

It is an amenable number.

71297455552 is a deficient number, since it is larger than the sum of its proper divisors (70203109808).

71297455552 is a wasteful number, since it uses less digits than its factorization.

71297455552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154948 (or 154938 counting only the distinct ones).

The product of its digits is 4410000, while the sum is 52.

The spelling of 71297455552 in words is "seventy-one billion, two hundred ninety-seven million, four hundred fifty-five thousand, five hundred fifty-two".