916998368947 has 4 divisors (see below), whose sum is σ = 917272676320. Its totient is φ = 916724061576.

The previous prime is 916998368939. The next prime is 916998368953. The reversal of 916998368947 is 749863899619.

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 916998368947 - 2³ = 916998368939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (916998368917) 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, 137148672 + ... + 137155357.

It is an arithmetic number, because the mean of its divisors is an integer number (229318169080).

Almost surely, 2^916998368947 is an apocalyptic number.

916998368947 is a deficient number, since it is larger than the sum of its proper divisors (274307373).

916998368947 is a wasteful number, since it uses less digits than its factorization.

916998368947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274307372.

The product of its digits is 1269789696, while the sum is 79.

The spelling of 916998368947 in words is "nine hundred sixteen billion, nine hundred ninety-eight million, three hundred sixty-eight thousand, nine hundred forty-seven".