73799299681 has 2 divisors, whose sum is σ = 73799299682. Its totient is φ = 73799299680.

The previous prime is 73799299657. The next prime is 73799299757. The reversal of 73799299681 is 18699299737.

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., 42604675281 + 31194624400 = 206409^2 + 176620^2 .

It is a cyclic number.

It is not a de Polignac number, because 73799299681 - 2⁹ = 73799299169 is a prime.

It is a super-2 number, since 2×73799299681² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 73799299681.

It is not a weakly prime, because it can be changed into another prime (73799299621) 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, 36899649840 + 36899649841.

It is an arithmetic number, because the mean of its divisors is an integer number (36899649841).

Almost surely, 2^73799299681 is an apocalyptic number.

It is an amenable number.

73799299681 is a deficient number, since it is larger than the sum of its proper divisors (1).

73799299681 is an equidigital number, since it uses as much as digits as its factorization.

73799299681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 92588832, while the sum is 70.

The spelling of 73799299681 in words is "seventy-three billion, seven hundred ninety-nine million, two hundred ninety-nine thousand, six hundred eighty-one".