20683072472 has 8 divisors (see below), whose sum is σ = 38780760900. Its totient is φ = 10341536232.

The previous prime is 20683072471. The next prime is 20683072477. The reversal of 20683072472 is 27427038602.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20683072471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1292692022 + ... + 1292692037.

Almost surely, 2^20683072472 is an apocalyptic number.

It is an amenable number.

20683072472 is a deficient number, since it is larger than the sum of its proper divisors (18097688428).

20683072472 is a wasteful number, since it uses less digits than its factorization.

20683072472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2585384065 (or 2585384061 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 41.

The spelling of 20683072472 in words is "twenty billion, six hundred eighty-three million, seventy-two thousand, four hundred seventy-two".