816714311997 has 4 divisors (see below), whose sum is σ = 1088952416000. Its totient is φ = 544476207996.

The previous prime is 816714311957. The next prime is 816714312077. The reversal of 816714311997 is 799113417618.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 816714311997 - 2¹¹ = 816714309949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (816714311957) 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, 136119051997 + ... + 136119052002.

It is an arithmetic number, because the mean of its divisors is an integer number (272238104000).

Almost surely, 2^816714311997 is an apocalyptic number.

It is an amenable number.

816714311997 is a deficient number, since it is larger than the sum of its proper divisors (272238104003).

816714311997 is a wasteful number, since it uses less digits than its factorization.

816714311997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272238104002.

The product of its digits is 2286144, while the sum is 57.

The spelling of 816714311997 in words is "eight hundred sixteen billion, seven hundred fourteen million, three hundred eleven thousand, nine hundred ninety-seven".