51413207558243 has 4 divisors (see below), whose sum is σ = 51588679256688. Its totient is φ = 51237735859800.

The previous prime is 51413207558197. The next prime is 51413207558287. The reversal of 51413207558243 is 34285570231415.

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

It is a cyclic number.

It is not a de Polignac number, because 51413207558243 - 2¹⁴ = 51413207541859 is a prime.

It is a super-2 number, since 2×51413207558243² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51413207558191 and 51413207558200.

It is not an unprimeable number, because it can be changed into a prime (51413207558143) 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, 87735848783 + ... + 87735849368.

It is an arithmetic number, because the mean of its divisors is an integer number (12897169814172).

Almost surely, 2^{51413207558243} is an apocalyptic number.

51413207558243 is a deficient number, since it is larger than the sum of its proper divisors (175471698445).

51413207558243 is a wasteful number, since it uses less digits than its factorization.

51413207558243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175471698444.

The product of its (nonzero) digits is 4032000, while the sum is 50.

Adding to 51413207558243 its reverse (34285570231415), we get a palindrome (85698777789658).

The spelling of 51413207558243 in words is "fifty-one trillion, four hundred thirteen billion, two hundred seven million, five hundred fifty-eight thousand, two hundred forty-three".