20335006436 has 12 divisors (see below), whose sum is σ = 36073744812. Its totient is φ = 10028222208.

The previous prime is 20335006429. The next prime is 20335006457. The reversal of 20335006436 is 63460053302.

It can be written as a sum of positive squares in 2 ways, for example, as 15200424100 + 5134582336 = 123290^2 + 71656^2 .

It is a super-2 number, since 2×20335006436² (a number of 21 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 34819925 + ... + 34820508.

It is an arithmetic number, because the mean of its divisors is an integer number (3006145401).

Almost surely, 2^20335006436 is an apocalyptic number.

It is an amenable number.

20335006436 is a deficient number, since it is larger than the sum of its proper divisors (15738738376).

20335006436 is a wasteful number, since it uses less digits than its factorization.

20335006436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69640510 (or 69640508 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 32.

Adding to 20335006436 its reverse (63460053302), we get a palindrome (83795059738).

The spelling of 20335006436 in words is "twenty billion, three hundred thirty-five million, six thousand, four hundred thirty-six".