821626231341 has 16 divisors (see below), whose sum is σ = 1120933612800. Its totient is φ = 535155366720.

The previous prime is 821626231333. The next prime is 821626231367. The reversal of 821626231341 is 143132626128.

It is not a de Polignac number, because 821626231341 - 2³ = 821626231333 is a prime.

It is a super-2 number, since 2×821626231341² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 821626231341.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (821626231331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15039045 + ... + 15093578.

It is an arithmetic number, because the mean of its divisors is an integer number (70058350800).

Almost surely, 2^821626231341 is an apocalyptic number.

It is an amenable number.

821626231341 is a deficient number, since it is larger than the sum of its proper divisors (299307381459).

821626231341 is a wasteful number, since it uses less digits than its factorization.

821626231341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30132836.

The product of its digits is 82944, while the sum is 39.

Adding to 821626231341 its reverse (143132626128), we get a palindrome (964758857469).

The spelling of 821626231341 in words is "eight hundred twenty-one billion, six hundred twenty-six million, two hundred thirty-one thousand, three hundred forty-one".