73845884526881 has 2 divisors, whose sum is σ = 73845884526882. Its totient is φ = 73845884526880.

The previous prime is 73845884526877. The next prime is 73845884526899. The reversal of 73845884526881 is 18862548854837.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38671495886881 + 35174388640000 = 6218641^2 + 5930800^2 .

It is a cyclic number.

It is not a de Polignac number, because 73845884526881 - 2² = 73845884526877 is a prime.

It is a super-2 number, since 2×73845884526881² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (73845884526811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36922942263440 + 36922942263441.

It is an arithmetic number, because the mean of its divisors is an integer number (36922942263441).

Almost surely, 2^{73845884526881} is an apocalyptic number.

It is an amenable number.

73845884526881 is a deficient number, since it is larger than the sum of its proper divisors (1).

73845884526881 is an equidigital number, since it uses as much as digits as its factorization.

73845884526881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3303014400, while the sum is 77.

The spelling of 73845884526881 in words is "seventy-three trillion, eight hundred forty-five billion, eight hundred eighty-four million, five hundred twenty-six thousand, eight hundred eighty-one".