2145099987184 has 80 divisors (see below), whose sum is σ = 5183473522176. Its totient is φ = 835462368000.

The previous prime is 2145099987181. The next prime is 2145099987257. The reversal of 2145099987184 is 4817899905412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145099987181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3255234 + ... + 3858334.

Almost surely, 2^{2145099987184} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2145099987184, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2591736761088).

2145099987184 is an abundant number, since it is smaller than the sum of its proper divisors (3038373534992).

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

2145099987184 is a wasteful number, since it uses less digits than its factorization.

2145099987184 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606014 (or 606008 counting only the distinct ones).

The product of its (nonzero) digits is 52254720, while the sum is 67.

The spelling of 2145099987184 in words is "two trillion, one hundred forty-five billion, ninety-nine million, nine hundred eighty-seven thousand, one hundred eighty-four".