71349320450 has 24 divisors (see below), whose sum is σ = 140516192772. Its totient is φ = 26860920320.

The previous prime is 71349320443. The next prime is 71349320459. The reversal of 71349320450 is 5402394317.

It can be written as a sum of positive squares in 6 ways, for example, as 18595958689 + 52753361761 = 136367^2 + 229681^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (71349320459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41969339 + ... + 41971038.

Almost surely, 2^71349320450 is an apocalyptic number.

71349320450 is a deficient number, since it is larger than the sum of its proper divisors (69166872322).

71349320450 is a wasteful number, since it uses less digits than its factorization.

71349320450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83940406 (or 83940401 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 38.

The spelling of 71349320450 in words is "seventy-one billion, three hundred forty-nine million, three hundred twenty thousand, four hundred fifty".