71552802553 has 4 divisors (see below), whose sum is σ = 71553517668. Its totient is φ = 71552087440.

The previous prime is 71552802523. The next prime is 71552802569. The reversal of 71552802553 is 35520825517.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 22990747129 + 48562055424 = 151627^2 + 220368^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71552802553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71552802523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177118 + ... + 417703.

It is an arithmetic number, because the mean of its divisors is an integer number (17888379417).

Almost surely, 2^71552802553 is an apocalyptic number.

It is an amenable number.

71552802553 is a deficient number, since it is larger than the sum of its proper divisors (715115).

71552802553 is a wasteful number, since it uses less digits than its factorization.

71552802553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715114.

The product of its (nonzero) digits is 420000, while the sum is 43.

The spelling of 71552802553 in words is "seventy-one billion, five hundred fifty-two million, eight hundred two thousand, five hundred fifty-three".