857281102984 has 32 divisors (see below), whose sum is σ = 1619035424640. Its totient is φ = 425549505600.

The previous prime is 857281102939. The next prime is 857281103023. The reversal of 857281102984 is 489201182758.

857281102984 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×857281102984² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85087 + ... + 1312174.

It is an arithmetic number, because the mean of its divisors is an integer number (50594857020).

Almost surely, 2^857281102984 is an apocalyptic number.

It is an amenable number.

857281102984 is a deficient number, since it is larger than the sum of its proper divisors (761754321656).

857281102984 is a wasteful number, since it uses less digits than its factorization.

857281102984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1397821 (or 1397817 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 55.

The spelling of 857281102984 in words is "eight hundred fifty-seven billion, two hundred eighty-one million, one hundred two thousand, nine hundred eighty-four".