20673639029 has 8 divisors (see below), whose sum is σ = 21156370752. Its totient is φ = 20190996000.

The previous prime is 20673639023. The next prime is 20673639043. The reversal of 20673639029 is 92093637602.

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

It is a cyclic number.

It is not a de Polignac number, because 20673639029 - 2⁴ = 20673639013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20673639023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 804392 + ... + 829694.

It is an arithmetic number, because the mean of its divisors is an integer number (2644546344).

Almost surely, 2^20673639029 is an apocalyptic number.

It is an amenable number.

20673639029 is a deficient number, since it is larger than the sum of its proper divisors (482731723).

20673639029 is a wasteful number, since it uses less digits than its factorization.

20673639029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44347.

The product of its (nonzero) digits is 734832, while the sum is 47.

The spelling of 20673639029 in words is "twenty billion, six hundred seventy-three million, six hundred thirty-nine thousand, twenty-nine".