2118052354609 has 27 divisors (see below), whose sum is σ = 2290332507211. Its totient is φ = 1958322996800.

The previous prime is 2118052354591. The next prime is 2118052354619. The reversal of 2118052354609 is 9064532508112.

The square root of 2118052354609 is 1455353.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1649002698225 + 469049656384 = 1284135^2 + 684872^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2118052354609 is a prime.

It is a super-2 number, since 2×2118052354609² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2118052354619) 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 26 ways as a sum of consecutive naturals, for example, 1459718334 + ... + 1459719784.

Almost surely, 2^{2118052354609} is an apocalyptic number.

2118052354609 is the 1455353-rd square number.

2118052354609 is the 727677-th centered octagonal number.

It is an amenable number.

2118052354609 is a deficient number, since it is larger than the sum of its proper divisors (172280152602).

2118052354609 is an frugal number, since it uses more digits than its factorization.

2118052354609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3054 (or 1527 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 46.

The spelling of 2118052354609 in words is "two trillion, one hundred eighteen billion, fifty-two million, three hundred fifty-four thousand, six hundred nine".