20101405453429 has 2 divisors, whose sum is σ = 20101405453430. Its totient is φ = 20101405453428.

The previous prime is 20101405453397. The next prime is 20101405453469. The reversal of 20101405453429 is 92435450410102.

It is an a-pointer prime, because the next prime (20101405453469) can be obtained adding 20101405453429 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20100247888900 + 1157564529 = 4483330^2 + 34023^2 .

It is a cyclic number.

It is not a de Polignac number, because 20101405453429 - 2⁵ = 20101405453397 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20101405453391 and 20101405453400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20101405453469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10050702726714 + 10050702726715.

It is an arithmetic number, because the mean of its divisors is an integer number (10050702726715).

Almost surely, 2^{20101405453429} is an apocalyptic number.

It is an amenable number.

20101405453429 is a deficient number, since it is larger than the sum of its proper divisors (1).

20101405453429 is an equidigital number, since it uses as much as digits as its factorization.

20101405453429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 172800, while the sum is 40.

The spelling of 20101405453429 in words is "twenty trillion, one hundred one billion, four hundred five million, four hundred fifty-three thousand, four hundred twenty-nine".