853422682421 has 4 divisors (see below), whose sum is σ = 865113404172. Its totient is φ = 841731960672.

The previous prime is 853422682349. The next prime is 853422682423. The reversal of 853422682421 is 124286224358.

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 168436368100 + 684986314321 = 410410^2 + 827639^2 .

It is a cyclic number.

It is not a de Polignac number, because 853422682421 - 2³⁸ = 578544775477 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (853422682423) 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, 5845360766 + ... + 5845360911.

It is an arithmetic number, because the mean of its divisors is an integer number (216278351043).

Almost surely, 2^853422682421 is an apocalyptic number.

It is an amenable number.

853422682421 is a deficient number, since it is larger than the sum of its proper divisors (11690721751).

853422682421 is a wasteful number, since it uses less digits than its factorization.

853422682421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11690721750.

The product of its digits is 1474560, while the sum is 47.

The spelling of 853422682421 in words is "eight hundred fifty-three billion, four hundred twenty-two million, six hundred eighty-two thousand, four hundred twenty-one".