997433002271 has 2 divisors, whose sum is σ = 997433002272. Its totient is φ = 997433002270.

The previous prime is 997433002183. The next prime is 997433002289. The reversal of 997433002271 is 172200334799.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-997433002271 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (997433007271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498716501135 + 498716501136.

It is an arithmetic number, because the mean of its divisors is an integer number (498716501136).

Almost surely, 2^997433002271 is an apocalyptic number.

997433002271 is a deficient number, since it is larger than the sum of its proper divisors (1).

997433002271 is an equidigital number, since it uses as much as digits as its factorization.

997433002271 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 571536, while the sum is 47.

The spelling of 997433002271 in words is "nine hundred ninety-seven billion, four hundred thirty-three million, two thousand, two hundred seventy-one".