994852818251 has 4 divisors (see below), whose sum is σ = 994930560000. Its totient is φ = 994775076504.

The previous prime is 994852818247. The next prime is 994852818277. The reversal of 994852818251 is 152818258499.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 994852818251 - 2² = 994852818247 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (994852818241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38851676 + ... + 38877273.

It is an arithmetic number, because the mean of its divisors is an integer number (248732640000).

Almost surely, 2^994852818251 is an apocalyptic number.

994852818251 is a deficient number, since it is larger than the sum of its proper divisors (77741749).

994852818251 is a wasteful number, since it uses less digits than its factorization.

994852818251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77741748.

The product of its digits is 16588800, while the sum is 62.

The spelling of 994852818251 in words is "nine hundred ninety-four billion, eight hundred fifty-two million, eight hundred eighteen thousand, two hundred fifty-one".