71181929312 has 36 divisors (see below), whose sum is σ = 151748617860. Its totient is φ = 32853195648.

The previous prime is 71181929311. The next prime is 71181929369. The reversal of 71181929312 is 21392918117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71181929311) 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 5 ways as a sum of consecutive naturals, for example, 6575762 + ... + 6586577.

It is an arithmetic number, because the mean of its divisors is an integer number (4215239385).

Almost surely, 2^71181929312 is an apocalyptic number.

It is an amenable number.

71181929312 is an abundant number, since it is smaller than the sum of its proper divisors (80566688548).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71181929312 is a wasteful number, since it uses less digits than its factorization.

71181929312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13162375 (or 13162354 counting only the distinct ones).

The product of its digits is 54432, while the sum is 44.

The spelling of 71181929312 in words is "seventy-one billion, one hundred eighty-one million, nine hundred twenty-nine thousand, three hundred twelve".