252727861890 has 64 divisors (see below), whose sum is σ = 693237429504. Its totient is φ = 57762951168.

The previous prime is 252727861843. The next prime is 252727861901. The reversal of 252727861890 is 98168727252.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 252727861890.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5777782 + ... + 5821358.

It is an arithmetic number, because the mean of its divisors is an integer number (10831834836).

Almost surely, 2^252727861890 is an apocalyptic number.

252727861890 is an abundant number, since it is smaller than the sum of its proper divisors (440509567614).

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

252727861890 is a wasteful number, since it uses less digits than its factorization.

252727861890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71211.

The product of its (nonzero) digits is 6773760, while the sum is 57.

The spelling of 252727861890 in words is "two hundred fifty-two billion, seven hundred twenty-seven million, eight hundred sixty-one thousand, eight hundred ninety".