2118173840832 has 168 divisors, whose sum is σ = 6862451543040. Its totient is φ = 573340239360.

The previous prime is 2118173840747. The next prime is 2118173840833. The reversal of 2118173840832 is 2380483718112.

It is a tau number, because it is divible by the number of its divisors (168).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2118173840833) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5746144 + ... + 6103647.

Almost surely, 2^{2118173840832} is an apocalyptic number.

It is an amenable number.

2118173840832 is an abundant number, since it is smaller than the sum of its proper divisors (4744277702208).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2118173840832 is a wasteful number, since it uses less digits than its factorization.

2118173840832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11849839 (or 11849822 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 48.

The spelling of 2118173840832 in words is "two trillion, one hundred eighteen billion, one hundred seventy-three million, eight hundred forty thousand, eight hundred thirty-two".