71148857056 has 24 divisors (see below), whose sum is σ = 144904462920. Its totient is φ = 34347723648.

The previous prime is 71148857033. The next prime is 71148857077. The reversal of 71148857056 is 65075884117.

It is a junction number, because it is equal to n+sod(n) for n = 71148856994 and 71148857012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38333586 + ... + 38335441.

It is an arithmetic number, because the mean of its divisors is an integer number (6037685955).

Almost surely, 2^71148857056 is an apocalyptic number.

It is an amenable number.

71148857056 is an abundant number, since it is smaller than the sum of its proper divisors (73755605864).

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

71148857056 is a wasteful number, since it uses less digits than its factorization.

71148857056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76669066 (or 76669058 counting only the distinct ones).

The product of its (nonzero) digits is 1881600, while the sum is 52.

The spelling of 71148857056 in words is "seventy-one billion, one hundred forty-eight million, eight hundred fifty-seven thousand, fifty-six".