2178939550452 has 48 divisors (see below), whose sum is σ = 5812722959232. Its totient is φ = 622316568960.

The previous prime is 2178939550421. The next prime is 2178939550511. The reversal of 2178939550452 is 2540559398712.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4728283 + ... + 5168610.

It is an arithmetic number, because the mean of its divisors is an integer number (121098394984).

Almost surely, 2^{2178939550452} is an apocalyptic number.

It is an amenable number.

2178939550452 is an abundant number, since it is smaller than the sum of its proper divisors (3633783408780).

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

2178939550452 is a wasteful number, since it uses less digits than its factorization.

2178939550452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9899528 (or 9899526 counting only the distinct ones).

The product of its (nonzero) digits is 27216000, while the sum is 60.

The spelling of 2178939550452 in words is "two trillion, one hundred seventy-eight billion, nine hundred thirty-nine million, five hundred fifty thousand, four hundred fifty-two".