51121324421343 has 12 divisors (see below), whose sum is σ = 80554814239848. Its totient is φ = 30982620861360.

The previous prime is 51121324421309. The next prime is 51121324421381. The reversal of 51121324421343 is 34312442312115.

51121324421343 is a `hidden beast` number, since 5 + 11 + 213 + 2 + 4 + 421 + 3 + 4 + 3 = 666.

It is not a de Polignac number, because 51121324421343 - 2³⁸ = 50846446514399 is a prime.

It is a super-2 number, since 2×51121324421343² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51121324421298 and 51121324421307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51121324420343) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 258188507080 + ... + 258188507277.

It is an arithmetic number, because the mean of its divisors is an integer number (6712901186654).

Almost surely, 2^{51121324421343} is an apocalyptic number.

51121324421343 is a deficient number, since it is larger than the sum of its proper divisors (29433489818505).

51121324421343 is a wasteful number, since it uses less digits than its factorization.

51121324421343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516377014374 (or 516377014371 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

Adding to 51121324421343 its reverse (34312442312115), we get a palindrome (85433766733458).

The spelling of 51121324421343 in words is "fifty-one trillion, one hundred twenty-one billion, three hundred twenty-four million, four hundred twenty-one thousand, three hundred forty-three".