2918813217155 has 16 divisors (see below), whose sum is σ = 3987121929984. Its totient is φ = 2030478758880.

The previous prime is 2918813217127. The next prime is 2918813217157. The reversal of 2918813217155 is 5517123188192.

It is a happy number.

2918813217155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2918813217155 - 2¹⁸ = 2918812955011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2918813217097 and 2918813217106.

It is not an unprimeable number, because it can be changed into a prime (2918813217157) 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, 1153679849 + ... + 1153682378.

It is an arithmetic number, because the mean of its divisors is an integer number (249195120624).

Almost surely, 2^{2918813217155} is an apocalyptic number.

2918813217155 is a deficient number, since it is larger than the sum of its proper divisors (1068308712829).

2918813217155 is a wasteful number, since it uses less digits than its factorization.

2918813217155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2307362266.

The product of its digits is 1209600, while the sum is 53.

The spelling of 2918813217155 in words is "two trillion, nine hundred eighteen billion, eight hundred thirteen million, two hundred seventeen thousand, one hundred fifty-five".