20113515542429 has 2 divisors, whose sum is σ = 20113515542430. Its totient is φ = 20113515542428.

The previous prime is 20113515542413. The next prime is 20113515542437. The reversal of 20113515542429 is 92424551531102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10069674225625 + 10043841316804 = 3173275^2 + 3169202^2 .

It is a cyclic number.

It is not a de Polignac number, because 20113515542429 - 2⁴ = 20113515542413 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20113515542429.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20113515742429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10056757771214 + 10056757771215.

It is an arithmetic number, because the mean of its divisors is an integer number (10056757771215).

Almost surely, 2^{20113515542429} is an apocalyptic number.

It is an amenable number.

20113515542429 is a deficient number, since it is larger than the sum of its proper divisors (1).

20113515542429 is an equidigital number, since it uses as much as digits as its factorization.

20113515542429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432000, while the sum is 44.

The spelling of 20113515542429 in words is "twenty trillion, one hundred thirteen billion, five hundred fifteen million, five hundred forty-two thousand, four hundred twenty-nine".