20653336442 has 8 divisors (see below), whose sum is σ = 31011716916. Its totient is φ = 10316097472.

The previous prime is 20653336439. The next prime is 20653336463. The reversal of 20653336442 is 24463335602.

It can be written as a sum of positive squares in 2 ways, for example, as 16197907441 + 4455429001 = 127271^2 + 66749^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 20653336396 and 20653336405.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5282933 + ... + 5286840.

Almost surely, 2^20653336442 is an apocalyptic number.

20653336442 is a deficient number, since it is larger than the sum of its proper divisors (10358380474).

20653336442 is a wasteful number, since it uses less digits than its factorization.

20653336442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10570752.

The product of its (nonzero) digits is 311040, while the sum is 38.

The spelling of 20653336442 in words is "twenty billion, six hundred fifty-three million, three hundred thirty-six thousand, four hundred forty-two".