997560132643 has 2 divisors, whose sum is σ = 997560132644. Its totient is φ = 997560132642.

The previous prime is 997560132619. The next prime is 997560132649. The reversal of 997560132643 is 346231065799.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-997560132643 is a prime.

It is not a weakly prime, because it can be changed into another prime (997560132649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498780066321 + 498780066322.

It is an arithmetic number, because the mean of its divisors is an integer number (498780066322).

Almost surely, 2^997560132643 is an apocalyptic number.

997560132643 is a deficient number, since it is larger than the sum of its proper divisors (1).

997560132643 is an equidigital number, since it uses as much as digits as its factorization.

997560132643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7348320, while the sum is 55.

The spelling of 997560132643 in words is "nine hundred ninety-seven billion, five hundred sixty million, one hundred thirty-two thousand, six hundred forty-three".