20444423135 has 32 divisors (see below), whose sum is σ = 25115650560. Its totient is φ = 15973200000.

The previous prime is 20444423123. The next prime is 20444423183. The reversal of 20444423135 is 53132444402.

It is not a de Polignac number, because 20444423135 - 2⁴ = 20444423119 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14089160 + ... + 14090610.

It is an arithmetic number, because the mean of its divisors is an integer number (784864080).

Almost surely, 2^20444423135 is an apocalyptic number.

20444423135 is a deficient number, since it is larger than the sum of its proper divisors (4671227425).

20444423135 is a wasteful number, since it uses less digits than its factorization.

20444423135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1919.

The product of its (nonzero) digits is 46080, while the sum is 32.

Adding to 20444423135 its reverse (53132444402), we get a palindrome (73576867537).

The spelling of 20444423135 in words is "twenty billion, four hundred forty-four million, four hundred twenty-three thousand, one hundred thirty-five".