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997564326947 is a prime number
BaseRepresentation
bin11101000010000110111…
…01111010010000100011
310112100212222021102011222
432201003131322100203
5112321002431430242
62042135201325255
7132033400605266
oct16410335722043
93470788242158
10997564326947
11355079068761
1214140233682b
13730ba79c996
14363d4b7ccdd
151ae379e55d2
hexe84377a423

997564326947 has 2 divisors, whose sum is σ = 997564326948. Its totient is φ = 997564326946.

The previous prime is 997564326929. The next prime is 997564327007. The reversal of 997564326947 is 749623465799.

It is a weak prime.

997564326947 is a truncatable prime.

It is a cyclic number.

It is not a de Polignac number, because 997564326947 - 222 = 997560132643 is a prime.

It is a super-2 number, since 2×9975643269472 (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (997564326917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498782163473 + 498782163474.

It is an arithmetic number, because the mean of its divisors is an integer number (498782163474).

Almost surely, 2997564326947 is an apocalyptic number.

997564326947 is a deficient number, since it is larger than the sum of its proper divisors (1).

997564326947 is an equidigital number, since it uses as much as digits as its factorization.

997564326947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 617258880, while the sum is 71.

The spelling of 997564326947 in words is "nine hundred ninety-seven billion, five hundred sixty-four million, three hundred twenty-six thousand, nine hundred forty-seven".