71163028141621 has 4 divisors (see below), whose sum is σ = 76637107229452. Its totient is φ = 65688949053792.

The previous prime is 71163028141603. The next prime is 71163028141703. The reversal of 71163028141621 is 12614182036117.

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 8512162188721 + 62650865952900 = 2917561^2 + 7915230^2 .

It is a cyclic number.

It is not a de Polignac number, because 71163028141621 - 2¹¹ = 71163028139573 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 (71163028142621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2737039543896 + ... + 2737039543921.

It is an arithmetic number, because the mean of its divisors is an integer number (19159276807363).

Almost surely, 2^{71163028141621} is an apocalyptic number.

It is an amenable number.

71163028141621 is a deficient number, since it is larger than the sum of its proper divisors (5474079087831).

71163028141621 is a wasteful number, since it uses less digits than its factorization.

71163028141621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5474079087830.

The product of its (nonzero) digits is 96768, while the sum is 43.

The spelling of 71163028141621 in words is "seventy-one trillion, one hundred sixty-three billion, twenty-eight million, one hundred forty-one thousand, six hundred twenty-one".