20045420135 has 16 divisors (see below), whose sum is σ = 25928429184. Its totient is φ = 14789298432.

The previous prime is 20045420119. The next prime is 20045420141. The reversal of 20045420135 is 53102454002.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20045420135 - 2⁴ = 20045420119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 68102 + ... + 211491.

It is an arithmetic number, because the mean of its divisors is an integer number (1620526824).

Almost surely, 2^20045420135 is an apocalyptic number.

20045420135 is a deficient number, since it is larger than the sum of its proper divisors (5883009049).

20045420135 is a wasteful number, since it uses less digits than its factorization.

20045420135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280714.

The product of its (nonzero) digits is 4800, while the sum is 26.

Adding to 20045420135 its reverse (53102454002), we get a palindrome (73147874137).

The spelling of 20045420135 in words is "twenty billion, forty-five million, four hundred twenty thousand, one hundred thirty-five".