71087373728 has 48 divisors (see below), whose sum is σ = 165106174464. Its totient is φ = 29483239680.

The previous prime is 71087373713. The next prime is 71087373733. The reversal of 71087373728 is 82737378017.

It is a self number, because there is not a number n which added to its sum of digits gives 71087373728.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5111675 + ... + 5125562.

It is an arithmetic number, because the mean of its divisors is an integer number (3439711968).

Almost surely, 2^71087373728 is an apocalyptic number.

It is an amenable number.

71087373728 is an abundant number, since it is smaller than the sum of its proper divisors (94018800736).

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

71087373728 is a wasteful number, since it uses less digits than its factorization.

71087373728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10237285 (or 10237277 counting only the distinct ones).

The product of its (nonzero) digits is 2765952, while the sum is 53.

The spelling of 71087373728 in words is "seventy-one billion, eighty-seven million, three hundred seventy-three thousand, seven hundred twenty-eight".