20010235613 has 2 divisors, whose sum is σ = 20010235614. Its totient is φ = 20010235612.

The previous prime is 20010235547. The next prime is 20010235639. The reversal of 20010235613 is 31653201002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14043909049 + 5966326564 = 118507^2 + 77242^2 .

It is a cyclic number.

It is not a de Polignac number, because 20010235613 - 2¹² = 20010231517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20010235013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10005117806 + 10005117807.

It is an arithmetic number, because the mean of its divisors is an integer number (10005117807).

Almost surely, 2^20010235613 is an apocalyptic number.

It is an amenable number.

20010235613 is a deficient number, since it is larger than the sum of its proper divisors (1).

20010235613 is an equidigital number, since it uses as much as digits as its factorization.

20010235613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 23.

Adding to 20010235613 its reverse (31653201002), we get a palindrome (51663436615).

The spelling of 20010235613 in words is "twenty billion, ten million, two hundred thirty-five thousand, six hundred thirteen".