20620005135 has 8 divisors (see below), whose sum is σ = 32992008240. Its totient is φ = 10997336064.

The previous prime is 20620005127. The next prime is 20620005191. The reversal of 20620005135 is 53150002602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20620005135 - 2³ = 20620005127 is a prime.

It is a super-2 number, since 2×20620005135² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 687333490 + ... + 687333519.

It is an arithmetic number, because the mean of its divisors is an integer number (4124001030).

Almost surely, 2^20620005135 is an apocalyptic number.

20620005135 is a deficient number, since it is larger than the sum of its proper divisors (12372003105).

20620005135 is a wasteful number, since it uses less digits than its factorization.

20620005135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1374667017.

The product of its (nonzero) digits is 1800, while the sum is 24.

Adding to 20620005135 its reverse (53150002602), we get a palindrome (73770007737).

The spelling of 20620005135 in words is "twenty billion, six hundred twenty million, five thousand, one hundred thirty-five".