117541778541243 has 64 divisors (see below), whose sum is σ = 186287383511040. Its totient is φ = 64522789322112.

The previous prime is 117541778541221. The next prime is 117541778541263. The reversal of 117541778541243 is 342145877145711.

It is a happy number.

It is not a de Polignac number, because 117541778541243 - 2¹⁶ = 117541778475707 is a prime.

It is a super-2 number, since 2×117541778541243² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (117541778541263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 100475838 + ... + 101638956.

It is an arithmetic number, because the mean of its divisors is an integer number (2910740367360).

Almost surely, 2^{117541778541243} is an apocalyptic number.

117541778541243 is a deficient number, since it is larger than the sum of its proper divisors (68745604969797).

117541778541243 is a wasteful number, since it uses less digits than its factorization.

117541778541243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1164816.

The product of its digits is 26342400, while the sum is 60.

The spelling of 117541778541243 in words is "one hundred seventeen trillion, five hundred forty-one billion, seven hundred seventy-eight million, five hundred forty-one thousand, two hundred forty-three".