5218539542451 has 16 divisors (see below), whose sum is σ = 7803423619200. Its totient is φ = 3446512094664.

The previous prime is 5218539542449. The next prime is 5218539542473. The reversal of 5218539542451 is 1542459358125.

5218539542451 is a `hidden beast` number, since 5 + 2 + 1 + 8 + 5 + 395 + 4 + 245 + 1 = 666.

5218539542451 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 5218539542451 - 2¹ = 5218539542449 is a prime.

It is a super-2 number, since 2×5218539542451² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5218539542851) 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, 903171141 + ... + 903176918.

It is an arithmetic number, because the mean of its divisors is an integer number (487713976200).

Almost surely, 2^{5218539542451} is an apocalyptic number.

5218539542451 is a deficient number, since it is larger than the sum of its proper divisors (2584884076749).

5218539542451 is a wasteful number, since it uses less digits than its factorization.

5218539542451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1806348175 (or 1806348169 counting only the distinct ones).

The product of its digits is 8640000, while the sum is 54.

The spelling of 5218539542451 in words is "five trillion, two hundred eighteen billion, five hundred thirty-nine million, five hundred forty-two thousand, four hundred fifty-one".