857228378756 has 24 divisors (see below), whose sum is σ = 1539591973920. Its totient is φ = 417404115072.

The previous prime is 857228378737. The next prime is 857228378789. The reversal of 857228378756 is 657873822758.

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 7 ways as a sum of consecutive naturals, for example, 7336526 + ... + 7452453.

It is an arithmetic number, because the mean of its divisors is an integer number (64149665580).

Almost surely, 2^857228378756 is an apocalyptic number.

857228378756 is a gapful number since it is divisible by the number (86) formed by its first and last digit.

It is an amenable number.

857228378756 is a deficient number, since it is larger than the sum of its proper divisors (682363595164).

857228378756 is a wasteful number, since it uses less digits than its factorization.

857228378756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14789363 (or 14789361 counting only the distinct ones).

The product of its digits is 316108800, while the sum is 68.

The spelling of 857228378756 in words is "eight hundred fifty-seven billion, two hundred twenty-eight million, three hundred seventy-eight thousand, seven hundred fifty-six".