71775237136 has 20 divisors (see below), whose sum is σ = 139093222464. Its totient is φ = 35880212000.

The previous prime is 71775237097. The next prime is 71775237169. The reversal of 71775237136 is 63173257717.

It is a self number, because there is not a number n which added to its sum of digits gives 71775237136.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 382540 + ... + 538411.

Almost surely, 2^71775237136 is an apocalyptic number.

It is an amenable number.

71775237136 is a deficient number, since it is larger than the sum of its proper divisors (67317985328).

71775237136 is a wasteful number, since it uses less digits than its factorization.

71775237136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 925830 (or 925824 counting only the distinct ones).

The product of its digits is 1296540, while the sum is 49.

The spelling of 71775237136 in words is "seventy-one billion, seven hundred seventy-five million, two hundred thirty-seven thousand, one hundred thirty-six".