73705242197 has 2 divisors, whose sum is σ = 73705242198. Its totient is φ = 73705242196.

The previous prime is 73705242179. The next prime is 73705242283. The reversal of 73705242197 is 79124250737.

Together with previous prime (73705242179) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54274554961 + 19430687236 = 232969^2 + 139394^2 .

It is a cyclic number.

It is not a de Polignac number, because 73705242197 - 2³⁰ = 72631500373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73705272197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36852621098 + 36852621099.

It is an arithmetic number, because the mean of its divisors is an integer number (36852621099).

Almost surely, 2^73705242197 is an apocalyptic number.

It is an amenable number.

73705242197 is a deficient number, since it is larger than the sum of its proper divisors (1).

73705242197 is an equidigital number, since it uses as much as digits as its factorization.

73705242197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 740880, while the sum is 47.

The spelling of 73705242197 in words is "seventy-three billion, seven hundred five million, two hundred forty-two thousand, one hundred ninety-seven".