994555506144 has 96 divisors (see below), whose sum is σ = 2650154371200. Its totient is φ = 326511263232.

The previous prime is 994555506067. The next prime is 994555506151. The reversal of 994555506144 is 441605555499.

It is a tau number, because it is divible by the number of its divisors (96).

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, 48544927 + ... + 48565409.

It is an arithmetic number, because the mean of its divisors is an integer number (27605774700).

Almost surely, 2^994555506144 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 994555506144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1325077185600).

994555506144 is an abundant number, since it is smaller than the sum of its proper divisors (1655598865056).

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

994555506144 is a wasteful number, since it uses less digits than its factorization.

994555506144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28112 (or 28104 counting only the distinct ones).

The product of its (nonzero) digits is 19440000, while the sum is 57.

The spelling of 994555506144 in words is "nine hundred ninety-four billion, five hundred fifty-five million, five hundred six thousand, one hundred forty-four".