71857339008 has 128 divisors (see below), whose sum is σ = 234918337920. Its totient is φ = 18951376896.

The previous prime is 71857338961. The next prime is 71857339061. The reversal of 71857339008 is 80093375817.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 993235 + ... + 1063122.

It is an arithmetic number, because the mean of its divisors is an integer number (1835299515).

Almost surely, 2^71857339008 is an apocalyptic number.

71857339008 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

71857339008 is an abundant number, since it is smaller than the sum of its proper divisors (163060998912).

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

71857339008 is a wasteful number, since it uses less digits than its factorization.

71857339008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2056394 (or 2056382 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 51.

The spelling of 71857339008 in words is "seventy-one billion, eight hundred fifty-seven million, three hundred thirty-nine thousand, eight".