20705936973 has 8 divisors (see below), whose sum is σ = 28281279936. Its totient is φ = 13467276000.

The previous prime is 20705936971. The next prime is 20705936987. The reversal of 20705936973 is 37963950702.

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

It is not a de Polignac number, because 20705936973 - 2¹ = 20705936971 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20705936971) 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, 84170353 + ... + 84170598.

It is an arithmetic number, because the mean of its divisors is an integer number (3535159992).

Almost surely, 2^20705936973 is an apocalyptic number.

It is an amenable number.

20705936973 is a deficient number, since it is larger than the sum of its proper divisors (7575342963).

20705936973 is a wasteful number, since it uses less digits than its factorization.

20705936973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168340995.

The product of its (nonzero) digits is 2143260, while the sum is 51.

The spelling of 20705936973 in words is "twenty billion, seven hundred five million, nine hundred thirty-six thousand, nine hundred seventy-three".