73949452217 has 2 divisors, whose sum is σ = 73949452218. Its totient is φ = 73949452216.

The previous prime is 73949452147. The next prime is 73949452261. The reversal of 73949452217 is 71225494937.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65607187321 + 8342264896 = 256139^2 + 91336^2 .

It is a cyclic number.

It is not a de Polignac number, because 73949452217 - 2¹⁰ = 73949451193 is a prime.

It is not a weakly prime, because it can be changed into another prime (73949472217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36974726108 + 36974726109.

It is an arithmetic number, because the mean of its divisors is an integer number (36974726109).

Almost surely, 2^73949452217 is an apocalyptic number.

It is an amenable number.

73949452217 is a deficient number, since it is larger than the sum of its proper divisors (1).

73949452217 is an equidigital number, since it uses as much as digits as its factorization.

73949452217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3810240, while the sum is 53.

The spelling of 73949452217 in words is "seventy-three billion, nine hundred forty-nine million, four hundred fifty-two thousand, two hundred seventeen".