20618481135 has 32 divisors (see below), whose sum is σ = 37809239040. Its totient is φ = 9398873088.

The previous prime is 20618481119. The next prime is 20618481203. The reversal of 20618481135 is 53118481602.

It is not a de Polignac number, because 20618481135 - 2⁴ = 20618481119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20618481093 and 20618481102.

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, 241075 + ... + 315204.

It is an arithmetic number, because the mean of its divisors is an integer number (1181538720).

Almost surely, 2^20618481135 is an apocalyptic number.

20618481135 is a deficient number, since it is larger than the sum of its proper divisors (17190757905).

20618481135 is a wasteful number, since it uses less digits than its factorization.

20618481135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556647.

The product of its (nonzero) digits is 46080, while the sum is 39.

The spelling of 20618481135 in words is "twenty billion, six hundred eighteen million, four hundred eighty-one thousand, one hundred thirty-five".