73573531601 has 2 divisors, whose sum is σ = 73573531602. Its totient is φ = 73573531600.

The previous prime is 73573531567. The next prime is 73573531607. The reversal of 73573531601 is 10613537537.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46171695376 + 27401836225 = 214876^2 + 165535^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73573531601 is a prime.

It is not a weakly prime, because it can be changed into another prime (73573531607) 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, 36786765800 + 36786765801.

It is an arithmetic number, because the mean of its divisors is an integer number (36786765801).

Almost surely, 2^73573531601 is an apocalyptic number.

It is an amenable number.

73573531601 is a deficient number, since it is larger than the sum of its proper divisors (1).

73573531601 is an equidigital number, since it uses as much as digits as its factorization.

73573531601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 198450, while the sum is 41.

The spelling of 73573531601 in words is "seventy-three billion, five hundred seventy-three million, five hundred thirty-one thousand, six hundred one".