299720017873 has 2 divisors, whose sum is σ = 299720017874. Its totient is φ = 299720017872.

The previous prime is 299720017847. The next prime is 299720017963. The reversal of 299720017873 is 378710027992.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 230238748224 + 69481269649 = 479832^2 + 263593^2 .

It is a cyclic number.

It is not a de Polignac number, because 299720017873 - 2¹⁷ = 299719886801 is a prime.

It is a super-2 number, since 2×299720017873² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (299720047873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 149860008936 + 149860008937.

It is an arithmetic number, because the mean of its divisors is an integer number (149860008937).

Almost surely, 2^299720017873 is an apocalyptic number.

It is an amenable number.

299720017873 is a deficient number, since it is larger than the sum of its proper divisors (1).

299720017873 is an equidigital number, since it uses as much as digits as its factorization.

299720017873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2667168, while the sum is 55.

The spelling of 299720017873 in words is "two hundred ninety-nine billion, seven hundred twenty million, seventeen thousand, eight hundred seventy-three".