20430771133 has 2 divisors, whose sum is σ = 20430771134. Its totient is φ = 20430771132.

The previous prime is 20430771113. The next prime is 20430771169. The reversal of 20430771133 is 33117703402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17360170564 + 3070600569 = 131758^2 + 55413^2 .

It is a cyclic number.

It is not a de Polignac number, because 20430771133 - 2¹³ = 20430762941 is a prime.

It is a super-2 number, since 2×20430771133² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20430771095 and 20430771104.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20430771113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10215385566 + 10215385567.

It is an arithmetic number, because the mean of its divisors is an integer number (10215385567).

Almost surely, 2^20430771133 is an apocalyptic number.

It is an amenable number.

20430771133 is a deficient number, since it is larger than the sum of its proper divisors (1).

20430771133 is an equidigital number, since it uses as much as digits as its factorization.

20430771133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10584, while the sum is 31.

The spelling of 20430771133 in words is "twenty billion, four hundred thirty million, seven hundred seventy-one thousand, one hundred thirty-three".