73506663583 has 2 divisors, whose sum is σ = 73506663584. Its totient is φ = 73506663582.

The previous prime is 73506663577. The next prime is 73506663617. The reversal of 73506663583 is 38536660537.

It is a weak prime.

It is an emirp because it is prime and its reverse (38536660537) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73506663583 - 2⁵ = 73506663551 is a prime.

It is a super-2 number, since 2×73506663583² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 73506663583.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73506663523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36753331791 + 36753331792.

It is an arithmetic number, because the mean of its divisors is an integer number (36753331792).

Almost surely, 2^73506663583 is an apocalyptic number.

73506663583 is a deficient number, since it is larger than the sum of its proper divisors (1).

73506663583 is an equidigital number, since it uses as much as digits as its factorization.

73506663583 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8164800, while the sum is 52.

The spelling of 73506663583 in words is "seventy-three billion, five hundred six million, six hundred sixty-three thousand, five hundred eighty-three".