71857050148 has 12 divisors (see below), whose sum is σ = 135422902300. Its totient is φ = 33164792352.

The previous prime is 71857050121. The next prime is 71857050163. The reversal of 71857050148 is 84105075817.

It can be written as a sum of positive squares in 2 ways, for example, as 22091471424 + 49765578724 = 148632^2 + 223082^2 .

It is a junction number, because it is equal to n+sod(n) for n = 71857050098 and 71857050107.

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, 690933123 + ... + 690933226.

Almost surely, 2^71857050148 is an apocalyptic number.

It is an amenable number.

71857050148 is a deficient number, since it is larger than the sum of its proper divisors (63565852152).

71857050148 is a wasteful number, since it uses less digits than its factorization.

71857050148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1381866366 (or 1381866364 counting only the distinct ones).

The product of its (nonzero) digits is 313600, while the sum is 46.

The spelling of 71857050148 in words is "seventy-one billion, eight hundred fifty-seven million, fifty thousand, one hundred forty-eight".