2111836817144 has 8 divisors (see below), whose sum is σ = 3959694032160. Its totient is φ = 1055918408568.

The previous prime is 2111836817141. The next prime is 2111836817147. The reversal of 2111836817144 is 4417186381112.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2111836817141) and next prime (2111836817147).

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111836817141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131989801064 + ... + 131989801079.

It is an arithmetic number, because the mean of its divisors is an integer number (494961754020).

Almost surely, 2^{2111836817144} is an apocalyptic number.

It is an amenable number.

2111836817144 is a deficient number, since it is larger than the sum of its proper divisors (1847857215016).

2111836817144 is a wasteful number, since it uses less digits than its factorization.

2111836817144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263979602149 (or 263979602145 counting only the distinct ones).

The product of its digits is 258048, while the sum is 47.

The spelling of 2111836817144 in words is "two trillion, one hundred eleven billion, eight hundred thirty-six million, eight hundred seventeen thousand, one hundred forty-four".