857054228165 has 8 divisors (see below), whose sum is σ = 1028471592960. Its totient is φ = 685639036432.

The previous prime is 857054228123. The next prime is 857054228179. The reversal of 857054228165 is 561822450758.

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 a de Polignac number, because none of the positive numbers 2^k-857054228165 is a prime.

It is a congruent number.

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, 510092 + ... + 1405098.

It is an arithmetic number, because the mean of its divisors is an integer number (128558949120).

Almost surely, 2^857054228165 is an apocalyptic number.

It is an amenable number.

857054228165 is a deficient number, since it is larger than the sum of its proper divisors (171417364795).

857054228165 is a wasteful number, since it uses less digits than its factorization.

857054228165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1086531.

The product of its (nonzero) digits is 5376000, while the sum is 53.

The spelling of 857054228165 in words is "eight hundred fifty-seven billion, fifty-four million, two hundred twenty-eight thousand, one hundred sixty-five".