45217118643 has 4 divisors (see below), whose sum is σ = 60289491528. Its totient is φ = 30144745760.

The previous prime is 45217118627. The next prime is 45217118647. The reversal of 45217118643 is 34681171254.

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 45217118643 - 2⁴ = 45217118627 is a prime.

It is a super-2 number, since 2×45217118643² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 45217118595 and 45217118604.

It is not an unprimeable number, because it can be changed into a prime (45217118647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7536186438 + ... + 7536186443.

It is an arithmetic number, because the mean of its divisors is an integer number (15072372882).

Almost surely, 2^45217118643 is an apocalyptic number.

45217118643 is a deficient number, since it is larger than the sum of its proper divisors (15072372885).

45217118643 is a wasteful number, since it uses less digits than its factorization.

45217118643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15072372884.

The product of its digits is 161280, while the sum is 42.

Adding to 45217118643 its reverse (34681171254), we get a palindrome (79898289897).

It can be divided in two parts, 4521711 and 8643, that added together give a palindrome (4530354).

The spelling of 45217118643 in words is "forty-five billion, two hundred seventeen million, one hundred eighteen thousand, six hundred forty-three".