857865007948 has 48 divisors (see below), whose sum is σ = 1704105034240. Its totient is φ = 374599080000.

The previous prime is 857865007933. The next prime is 857865007973. The reversal of 857865007948 is 849700568758.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 163903 + ... + 1320073.

Almost surely, 2^857865007948 is an apocalyptic number.

It is an amenable number.

857865007948 is a deficient number, since it is larger than the sum of its proper divisors (846240026292).

857865007948 is a wasteful number, since it uses less digits than its factorization.

857865007948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1156958 (or 1156956 counting only the distinct ones).

The product of its (nonzero) digits is 135475200, while the sum is 67.

The spelling of 857865007948 in words is "eight hundred fifty-seven billion, eight hundred sixty-five million, seven thousand, nine hundred forty-eight".