857479252895 has 8 divisors (see below), whose sum is σ = 1028982341904. Its totient is φ = 685978576704.

The previous prime is 857479252823. The next prime is 857479252897. The reversal of 857479252895 is 598252974758.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 857479252895 - 2¹⁴ = 857479236511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857479252897) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 302192 + ... + 1343978.

It is an arithmetic number, because the mean of its divisors is an integer number (128622792738).

Almost surely, 2^857479252895 is an apocalyptic number.

857479252895 is a deficient number, since it is larger than the sum of its proper divisors (171503089009).

857479252895 is a wasteful number, since it uses less digits than its factorization.

857479252895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1206409.

The product of its digits is 508032000, while the sum is 71.

The spelling of 857479252895 in words is "eight hundred fifty-seven billion, four hundred seventy-nine million, two hundred fifty-two thousand, eight hundred ninety-five".