73603145393 has 2 divisors, whose sum is σ = 73603145394. Its totient is φ = 73603145392.

The previous prime is 73603145389. The next prime is 73603145419. The reversal of 73603145393 is 39354130637.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42647206144 + 30955939249 = 206512^2 + 175943^2 .

It is a cyclic number.

It is not a de Polignac number, because 73603145393 - 2² = 73603145389 is a prime.

It is a super-3 number, since 3×73603145393³ (a number of 34 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (73603145303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36801572696 + 36801572697.

It is an arithmetic number, because the mean of its divisors is an integer number (36801572697).

Almost surely, 2^73603145393 is an apocalyptic number.

It is an amenable number.

73603145393 is a deficient number, since it is larger than the sum of its proper divisors (1).

73603145393 is an equidigital number, since it uses as much as digits as its factorization.

73603145393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 612360, while the sum is 44.

The spelling of 73603145393 in words is "seventy-three billion, six hundred three million, one hundred forty-five thousand, three hundred ninety-three".