252111439448 has 64 divisors (see below), whose sum is σ = 534146745600. Its totient is φ = 110503048320.

The previous prime is 252111439399. The next prime is 252111439513. The reversal of 252111439448 is 844934111252.

It is a Cunningham number, because it is equal to 502107²-1.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 252111439399 and 252111439408.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 1945661 + ... + 2071187.

It is an arithmetic number, because the mean of its divisors is an integer number (8346042900).

Almost surely, 2^252111439448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 252111439448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (267073372800).

252111439448 is an abundant number, since it is smaller than the sum of its proper divisors (282035306152).

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

252111439448 is a wasteful number, since it uses less digits than its factorization.

252111439448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126360 (or 126356 counting only the distinct ones).

The product of its digits is 276480, while the sum is 44.

The spelling of 252111439448 in words is "two hundred fifty-two billion, one hundred eleven million, four hundred thirty-nine thousand, four hundred forty-eight".