71824349236 has 36 divisors (see below), whose sum is σ = 132315489964. Its totient is φ = 34089223680.

The previous prime is 71824349231. The next prime is 71824349279. The reversal of 71824349236 is 63294342817.

It can be written as a sum of positive squares in 6 ways, for example, as 15510211600 + 56314137636 = 124540^2 + 237306^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 71824349236.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71824349231) 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, 104440 + ... + 393136.

Almost surely, 2^71824349236 is an apocalyptic number.

It is an amenable number.

71824349236 is a deficient number, since it is larger than the sum of its proper divisors (60491140728).

71824349236 is a wasteful number, since it uses less digits than its factorization.

71824349236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288820 (or 288777 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 49.

The spelling of 71824349236 in words is "seventy-one billion, eight hundred twenty-four million, three hundred forty-nine thousand, two hundred thirty-six".