20673103140 has 72 divisors (see below), whose sum is σ = 66008866560. Its totient is φ = 5222677824.

The previous prime is 20673103127. The next prime is 20673103141. The reversal of 20673103140 is 4130137602.

20673103140 is a `hidden beast` number, since 206 + 7 + 310 + 3 + 140 = 666.

It is not an unprimeable number, because it can be changed into a prime (20673103141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3018964 + ... + 3025803.

Almost surely, 2^20673103140 is an apocalyptic number.

20673103140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20673103140 is an abundant number, since it is smaller than the sum of its proper divisors (45335763420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20673103140 is a wasteful number, since it uses less digits than its factorization.

20673103140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6044801 (or 6044796 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The spelling of 20673103140 in words is "twenty billion, six hundred seventy-three million, one hundred three thousand, one hundred forty".