2168138337450 has 48 divisors (see below), whose sum is σ = 5377623074976. Its totient is φ = 578101406400.

The previous prime is 2168138337433. The next prime is 2168138337479. The reversal of 2168138337450 is 547338318612.

It is a junction number, because it is equal to n+sod(n) for n = 2168138337393 and 2168138337402.

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 23 ways as a sum of consecutive naturals, for example, 410460 + ... + 2122440.

It is an arithmetic number, because the mean of its divisors is an integer number (112033814062).

Almost surely, 2^{2168138337450} is an apocalyptic number.

2168138337450 is an abundant number, since it is smaller than the sum of its proper divisors (3209484737526).

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

2168138337450 is a wasteful number, since it uses less digits than its factorization.

2168138337450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1720439 (or 1720434 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 51.

The spelling of 2168138337450 in words is "two trillion, one hundred sixty-eight billion, one hundred thirty-eight million, three hundred thirty-seven thousand, four hundred fifty".