1252438766844 has 48 divisors (see below), whose sum is σ = 3077392496640. Its totient is φ = 395664730560.

The previous prime is 1252438766783. The next prime is 1252438766857. The reversal of 1252438766844 is 4486678342521.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 20785612 + ... + 20845779.

It is an arithmetic number, because the mean of its divisors is an integer number (64112343680).

Almost surely, 2^{1252438766844} is an apocalyptic number.

It is an amenable number.

1252438766844 is an abundant number, since it is smaller than the sum of its proper divisors (1824953729796).

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

1252438766844 is a wasteful number, since it uses less digits than its factorization.

1252438766844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41631530 (or 41631528 counting only the distinct ones).

The product of its digits is 61931520, while the sum is 60.

The spelling of 1252438766844 in words is "one trillion, two hundred fifty-two billion, four hundred thirty-eight million, seven hundred sixty-six thousand, eight hundred forty-four".