994139870976 has 864 divisors, whose sum is σ = 3582840934400. Its totient is φ = 258705653760.

The previous prime is 994139870947. The next prime is 994139871013. The reversal of 994139870976 is 679078931499.

It is a Smith number, since the sum of its digits (72) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2175360540 + ... + 2175360996.

Almost surely, 2^994139870976 is an apocalyptic number.

994139870976 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 994139870976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1791420467200).

994139870976 is an abundant number, since it is smaller than the sum of its proper divisors (2588701063424).

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

994139870976 is a wasteful number, since it uses less digits than its factorization.

994139870976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765 (or 748 counting only the distinct ones).

The product of its (nonzero) digits is 185177664, while the sum is 72.

The spelling of 994139870976 in words is "nine hundred ninety-four billion, one hundred thirty-nine million, eight hundred seventy thousand, nine hundred seventy-six".