20647085933 has 8 divisors (see below), whose sum is σ = 20808037536. Its totient is φ = 20486185200.

The previous prime is 20647085911. The next prime is 20647085941. The reversal of 20647085933 is 33958074602.

It is a happy number.

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 20647085933 - 2¹² = 20647081837 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 (20647045933) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1444763 + ... + 1458983.

It is an arithmetic number, because the mean of its divisors is an integer number (2601004692).

Almost surely, 2^20647085933 is an apocalyptic number.

It is an amenable number.

20647085933 is a deficient number, since it is larger than the sum of its proper divisors (160951603).

20647085933 is a wasteful number, since it uses less digits than its factorization.

20647085933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25435.

The product of its (nonzero) digits is 1088640, while the sum is 47.

The spelling of 20647085933 in words is "twenty billion, six hundred forty-seven million, eighty-five thousand, nine hundred thirty-three".