20735628106 has 8 divisors (see below), whose sum is σ = 31283231364. Its totient is φ = 10307884320.

The previous prime is 20735628079. The next prime is 20735628113. The reversal of 20735628106 is 60182653702.

It can be written as a sum of positive squares in 2 ways, for example, as 19779890881 + 955737225 = 140641^2 + 30915^2 .

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

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, 29964435 + ... + 29965126.

Almost surely, 2^20735628106 is an apocalyptic number.

20735628106 is a deficient number, since it is larger than the sum of its proper divisors (10547603258).

20735628106 is a wasteful number, since it uses less digits than its factorization.

20735628106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59929736.

The product of its (nonzero) digits is 120960, while the sum is 40.

The spelling of 20735628106 in words is "twenty billion, seven hundred thirty-five million, six hundred twenty-eight thousand, one hundred six".