71596269421 has 2 divisors, whose sum is σ = 71596269422. Its totient is φ = 71596269420.

The previous prime is 71596269401. The next prime is 71596269439. The reversal of 71596269421 is 12496269517.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60176996100 + 11419273321 = 245310^2 + 106861^2 .

It is a cyclic number.

It is not a de Polignac number, because 71596269421 - 2¹⁵ = 71596236653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71596269401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35798134710 + 35798134711.

It is an arithmetic number, because the mean of its divisors is an integer number (35798134711).

Almost surely, 2^71596269421 is an apocalyptic number.

It is an amenable number.

71596269421 is a deficient number, since it is larger than the sum of its proper divisors (1).

71596269421 is an equidigital number, since it uses as much as digits as its factorization.

71596269421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1632960, while the sum is 52.

The spelling of 71596269421 in words is "seventy-one billion, five hundred ninety-six million, two hundred sixty-nine thousand, four hundred twenty-one".