857054228141 has 4 divisors (see below), whose sum is σ = 857103737532. Its totient is φ = 857004718752.

The previous prime is 857054228123. The next prime is 857054228179. The reversal of 857054228141 is 141822450758.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 690552690025 + 166501538116 = 830995^2 + 408046^2 .

It is a cyclic number.

It is not a de Polignac number, because 857054228141 - 2²⁶ = 856987119277 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 (857054228441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24728720 + ... + 24763353.

It is an arithmetic number, because the mean of its divisors is an integer number (214275934383).

Almost surely, 2^857054228141 is an apocalyptic number.

It is an amenable number.

857054228141 is a deficient number, since it is larger than the sum of its proper divisors (49509391).

857054228141 is a wasteful number, since it uses less digits than its factorization.

857054228141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49509390.

The product of its (nonzero) digits is 716800, while the sum is 47.

Adding to 857054228141 its reverse (141822450758), we get a palindrome (998876678899).

The spelling of 857054228141 in words is "eight hundred fifty-seven billion, fifty-four million, two hundred twenty-eight thousand, one hundred forty-one".