71351071622533 has 4 divisors (see below), whose sum is σ = 75548193482700. Its totient is φ = 67153949762368.

The previous prime is 71351071622491. The next prime is 71351071622543. The reversal of 71351071622533 is 33522617015317.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 32293783948644 + 39057287673889 = 5682762^2 + 6249583^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71351071622533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71351071622543) 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, 2098560930058 + ... + 2098560930091.

It is an arithmetic number, because the mean of its divisors is an integer number (18887048370675).

Almost surely, 2^{71351071622533} is an apocalyptic number.

It is an amenable number.

71351071622533 is a deficient number, since it is larger than the sum of its proper divisors (4197121860167).

71351071622533 is a wasteful number, since it uses less digits than its factorization.

71351071622533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4197121860166.

The product of its (nonzero) digits is 793800, while the sum is 46.

The spelling of 71351071622533 in words is "seventy-one trillion, three hundred fifty-one billion, seventy-one million, six hundred twenty-two thousand, five hundred thirty-three".