994515540516 has 135 divisors (see below), whose sum is σ = 2762636765889. Its totient is φ = 311909139072.

The previous prime is 994515540451. The next prime is 994515540517. The reversal of 994515540516 is 615045515499.

The square root of 994515540516 is 997254.

It is a perfect power (a square), and thus also a powerful number.

994515540516 is a `hidden beast` number, since 9 + 9 + 45 + 1 + 5 + 540 + 51 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 774276804900 + 220238735616 = 879930^2 + 469296^2 .

It is a super-2 number, since 2×994515540516² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (994515540517) by changing a digit.

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 44 ways as a sum of consecutive naturals, for example, 305158095 + ... + 305161353.

Almost surely, 2^994515540516 is an apocalyptic number.

994515540516 is the 997254-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 994515540516

994515540516 is an abundant number, since it is smaller than the sum of its proper divisors (1768121225373).

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

994515540516 is an equidigital number, since it uses as much as digits as its factorization.

994515540516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6568 (or 3281 counting only the distinct ones).

The product of its (nonzero) digits is 4860000, while the sum is 54.

The spelling of 994515540516 in words is "nine hundred ninety-four billion, five hundred fifteen million, five hundred forty thousand, five hundred sixteen".