2118469872780 has 384 divisors, whose sum is σ = 6747748761600. Its totient is φ = 551684431872.

The previous prime is 2118469872769. The next prime is 2118469872809. The reversal of 2118469872780 is 872789648112.

2118469872780 is a `hidden beast` number, since 2 + 1 + 18 + 469 + 87 + 2 + 7 + 80 = 666.

It is an unprimeable number.

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 127 ways as a sum of consecutive naturals, for example, 1248360892 + ... + 1248362588.

It is an arithmetic number, because the mean of its divisors is an integer number (17572262400).

Almost surely, 2^{2118469872780} is an apocalyptic number.

2118469872780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2118469872780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3373874380800).

2118469872780 is an abundant number, since it is smaller than the sum of its proper divisors (4629278888820).

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

2118469872780 is a wasteful number, since it uses less digits than its factorization.

2118469872780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2118 (or 2110 counting only the distinct ones).

The product of its (nonzero) digits is 21676032, while the sum is 63.

The spelling of 2118469872780 in words is "two trillion, one hundred eighteen billion, four hundred sixty-nine million, eight hundred seventy-two thousand, seven hundred eighty".