20629896236 has 18 divisors (see below), whose sum is σ = 38350907868. Its totient is φ = 9708185920.

The previous prime is 20629896223. The next prime is 20629896263. The reversal of 20629896236 is 63269892602.

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 5 ways as a sum of consecutive naturals, for example, 8921810 + ... + 8924121.

Almost surely, 2^20629896236 is an apocalyptic number.

It is an amenable number.

20629896236 is a deficient number, since it is larger than the sum of its proper divisors (17721011632).

20629896236 is a wasteful number, since it uses less digits than its factorization.

20629896236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17845969 (or 17845950 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 53.

The spelling of 20629896236 in words is "twenty billion, six hundred twenty-nine million, eight hundred ninety-six thousand, two hundred thirty-six".