518852078441 has 4 divisors (see below), whose sum is σ = 519252119892. Its totient is φ = 518452036992.

The previous prime is 518852078429. The next prime is 518852078461. The reversal of 518852078441 is 144870258815.

It is a happy number.

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 418634880400 + 100217198041 = 647020^2 + 316571^2 .

It is a cyclic number.

It is not a de Polignac number, because 518852078441 - 2³⁴ = 501672209257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (518852078461) 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, 200018780 + ... + 200021373.

It is an arithmetic number, because the mean of its divisors is an integer number (129813029973).

Almost surely, 2^518852078441 is an apocalyptic number.

It is an amenable number.

518852078441 is a deficient number, since it is larger than the sum of its proper divisors (400041451).

518852078441 is a wasteful number, since it uses less digits than its factorization.

518852078441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400041450.

The product of its (nonzero) digits is 2867200, while the sum is 53.

The spelling of 518852078441 in words is "five hundred eighteen billion, eight hundred fifty-two million, seventy-eight thousand, four hundred forty-one".