20553044135 has 32 divisors (see below), whose sum is σ = 28034381760. Its totient is φ = 14339939328.

The previous prime is 20553044131. The next prime is 20553044143. The reversal of 20553044135 is 53144035502.

It is a happy number.

It is not a de Polignac number, because 20553044135 - 2² = 20553044131 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20553044131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 438347 + ... + 482963.

It is an arithmetic number, because the mean of its divisors is an integer number (876074430).

Almost surely, 2^20553044135 is an apocalyptic number.

20553044135 is a deficient number, since it is larger than the sum of its proper divisors (7481337625).

20553044135 is a wasteful number, since it uses less digits than its factorization.

20553044135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45027.

The product of its (nonzero) digits is 36000, while the sum is 32.

Adding to 20553044135 its reverse (53144035502), we get a palindrome (73697079637).

The spelling of 20553044135 in words is "twenty billion, five hundred fifty-three million, forty-four thousand, one hundred thirty-five".