71281126553 has 8 divisors (see below), whose sum is σ = 87730617408. Its totient is φ = 56398253904.

The previous prime is 71281126523. The next prime is 71281126589. The reversal of 71281126553 is 35562118217.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71281126553 - 2¹⁶ = 71281061017 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 71281126553.

It is not an unprimeable number, because it can be changed into a prime (71281126513) 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, 391654451 + ... + 391654632.

It is an arithmetic number, because the mean of its divisors is an integer number (10966327176).

Almost surely, 2^71281126553 is an apocalyptic number.

It is an amenable number.

71281126553 is a deficient number, since it is larger than the sum of its proper divisors (16449490855).

71281126553 is a wasteful number, since it uses less digits than its factorization.

71281126553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783309103.

The product of its digits is 100800, while the sum is 41.

The spelling of 71281126553 in words is "seventy-one billion, two hundred eighty-one million, one hundred twenty-six thousand, five hundred fifty-three".