71212224553 has 4 divisors (see below), whose sum is σ = 71406263680. Its totient is φ = 71018185428.

The previous prime is 71212224509. The next prime is 71212224583. The reversal of 71212224553 is 35542221217.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71212224553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71212224583) 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, 97019013 + ... + 97019746.

It is an arithmetic number, because the mean of its divisors is an integer number (17851565920).

Almost surely, 2^71212224553 is an apocalyptic number.

It is an amenable number.

71212224553 is a deficient number, since it is larger than the sum of its proper divisors (194039127).

71212224553 is a wasteful number, since it uses less digits than its factorization.

71212224553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194039126.

The product of its digits is 33600, while the sum is 34.

The spelling of 71212224553 in words is "seventy-one billion, two hundred twelve million, two hundred twenty-four thousand, five hundred fifty-three".