30450523993 has 2 divisors, whose sum is σ = 30450523994. Its totient is φ = 30450523992.

The previous prime is 30450523843. The next prime is 30450524023. The reversal of 30450523993 is 39932505403.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20122273609 + 10328250384 = 141853^2 + 101628^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30450523993 is a prime.

It is a super-2 number, since 2×30450523993² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (30450023993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15225261996 + 15225261997.

It is an arithmetic number, because the mean of its divisors is an integer number (15225261997).

Almost surely, 2^30450523993 is an apocalyptic number.

It is an amenable number.

30450523993 is a deficient number, since it is larger than the sum of its proper divisors (1).

30450523993 is an equidigital number, since it uses as much as digits as its factorization.

30450523993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 437400, while the sum is 43.

The spelling of 30450523993 in words is "thirty billion, four hundred fifty million, five hundred twenty-three thousand, nine hundred ninety-three".