20673863439706 has 32 divisors (see below), whose sum is σ = 33526110888000. Its totient is φ = 9527946734592.

The previous prime is 20673863439703. The next prime is 20673863439727. The reversal of 20673863439706 is 60793436837602.

It is a super-2 number, since 2×20673863439706² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20673863439701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56238165 + ... + 56604583.

It is an arithmetic number, because the mean of its divisors is an integer number (1047690965250).

Almost surely, 2^{20673863439706} is an apocalyptic number.

20673863439706 is a deficient number, since it is larger than the sum of its proper divisors (12852247448294).

20673863439706 is a wasteful number, since it uses less digits than its factorization.

20673863439706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406606.

The product of its (nonzero) digits is 164602368, while the sum is 64.

The spelling of 20673863439706 in words is "twenty trillion, six hundred seventy-three billion, eight hundred sixty-three million, four hundred thirty-nine thousand, seven hundred six".