857820468454 has 8 divisors (see below), whose sum is σ = 1287117234360. Its totient is φ = 428781390336.

The previous prime is 857820468443. The next prime is 857820468467. The reversal of 857820468454 is 454864028758.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 857820468392 and 857820468401.

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, 64413624 + ... + 64426939.

It is an arithmetic number, because the mean of its divisors is an integer number (160889654295).

Almost surely, 2^857820468454 is an apocalyptic number.

857820468454 is a deficient number, since it is larger than the sum of its proper divisors (429296765906).

857820468454 is a wasteful number, since it uses less digits than its factorization.

857820468454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128843894.

The product of its (nonzero) digits is 68812800, while the sum is 61.

The spelling of 857820468454 in words is "eight hundred fifty-seven billion, eight hundred twenty million, four hundred sixty-eight thousand, four hundred fifty-four".