20664131035 has 8 divisors (see below), whose sum is σ = 24797884176. Its totient is φ = 16530686880.

The previous prime is 20664131021. The next prime is 20664131051. The reversal of 20664131035 is 53013146602.

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

It is not a de Polignac number, because 20664131035 - 2²³ = 20655742427 is a prime.

It is a super-2 number, since 2×20664131035² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20664130988 and 20664131006.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112072 + ... + 232138.

It is an arithmetic number, because the mean of its divisors is an integer number (3099735522).

Almost surely, 2^20664131035 is an apocalyptic number.

20664131035 is a deficient number, since it is larger than the sum of its proper divisors (4133753141).

20664131035 is a wasteful number, since it uses less digits than its factorization.

20664131035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154493.

The product of its (nonzero) digits is 12960, while the sum is 31.

Adding to 20664131035 its reverse (53013146602), we get a palindrome (73677277637).

The spelling of 20664131035 in words is "twenty billion, six hundred sixty-four million, one hundred thirty-one thousand, thirty-five".