838897788144 has 160 divisors (see below), whose sum is σ = 2416098484800. Its totient is φ = 249039544320.

The previous prime is 838897788133. The next prime is 838897788167. The reversal of 838897788144 is 441887798838.

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 31 ways as a sum of consecutive naturals, for example, 25842964 + ... + 25875404.

It is an arithmetic number, because the mean of its divisors is an integer number (15100615530).

Almost surely, 2^838897788144 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 838897788144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1208049242400).

838897788144 is an abundant number, since it is smaller than the sum of its proper divisors (1577200696656).

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

838897788144 is a wasteful number, since it uses less digits than its factorization.

838897788144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33923 (or 33917 counting only the distinct ones).

The product of its digits is 693633024, while the sum is 75.

The spelling of 838897788144 in words is "eight hundred thirty-eight billion, eight hundred ninety-seven million, seven hundred eighty-eight thousand, one hundred forty-four".