20530200293 has 2 divisors, whose sum is σ = 20530200294. Its totient is φ = 20530200292.

The previous prime is 20530200259. The next prime is 20530200311. The reversal of 20530200293 is 39200203502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11581418689 + 8948781604 = 107617^2 + 94598^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20530200293 is a prime.

It is a super-3 number, since 3×20530200293³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20530200193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10265100146 + 10265100147.

It is an arithmetic number, because the mean of its divisors is an integer number (10265100147).

Almost surely, 2^20530200293 is an apocalyptic number.

It is an amenable number.

20530200293 is a deficient number, since it is larger than the sum of its proper divisors (1).

20530200293 is an equidigital number, since it uses as much as digits as its factorization.

20530200293 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 26.

Adding to 20530200293 its reverse (39200203502), we get a palindrome (59730403795).

The spelling of 20530200293 in words is "twenty billion, five hundred thirty million, two hundred thousand, two hundred ninety-three".