71321278884 has 24 divisors (see below), whose sum is σ = 170914056768. Its totient is φ = 23131225440.

The previous prime is 71321278883. The next prime is 71321278909. The reversal of 71321278884 is 48887212317.

It is a super-3 number, since 3×71321278884³ (a number of 34 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (71321278883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80316312 + ... + 80317199.

It is an arithmetic number, because the mean of its divisors is an integer number (7121419032).

Almost surely, 2^71321278884 is an apocalyptic number.

71321278884 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

It is an amenable number.

71321278884 is an abundant number, since it is smaller than the sum of its proper divisors (99592777884).

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

71321278884 is a wasteful number, since it uses less digits than its factorization.

71321278884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160633555 (or 160633553 counting only the distinct ones).

The product of its digits is 1204224, while the sum is 51.

The spelling of 71321278884 in words is "seventy-one billion, three hundred twenty-one million, two hundred seventy-eight thousand, eight hundred eighty-four".