2178134021050 has 48 divisors (see below), whose sum is σ = 4619615310072. Its totient is φ = 756926208000.

The previous prime is 2178134021047. The next prime is 2178134021051. The reversal of 2178134021050 is 501204318712.

It can be written as a sum of positive squares in 12 ways, for example, as 67294066921 + 2110839954129 = 259411^2 + 1452873^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 2178134020997 and 2178134021015.

It is not an unprimeable number, because it can be changed into a prime (2178134021051) 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, 98547051 + ... + 98569150.

Almost surely, 2^{2178134021050} is an apocalyptic number.

2178134021050 is an abundant number, since it is smaller than the sum of its proper divisors (2441481289022).

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

2178134021050 is a wasteful number, since it uses less digits than its factorization.

2178134021050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197116243 (or 197116238 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 34.

Adding to 2178134021050 its reverse (501204318712), we get a palindrome (2679338339762).

The spelling of 2178134021050 in words is "two trillion, one hundred seventy-eight billion, one hundred thirty-four million, twenty-one thousand, fifty".