20333234413 has 2 divisors, whose sum is σ = 20333234414. Its totient is φ = 20333234412.

The previous prime is 20333234401. The next prime is 20333234417. The reversal of 20333234413 is 31443233302.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14435301609 + 5897932804 = 120147^2 + 76798^2 .

It is a cyclic number.

It is not a de Polignac number, because 20333234413 - 2²¹ = 20331137261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20333234417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10166617206 + 10166617207.

It is an arithmetic number, because the mean of its divisors is an integer number (10166617207).

Almost surely, 2^20333234413 is an apocalyptic number.

It is an amenable number.

20333234413 is a deficient number, since it is larger than the sum of its proper divisors (1).

20333234413 is an equidigital number, since it uses as much as digits as its factorization.

20333234413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 28.

Adding to 20333234413 its reverse (31443233302), we get a palindrome (51776467715).

The spelling of 20333234413 in words is "twenty billion, three hundred thirty-three million, two hundred thirty-four thousand, four hundred thirteen".