20983075497 has 12 divisors (see below), whose sum is σ = 30345724864. Its totient is φ = 13971714840.

The previous prime is 20983075471. The next prime is 20983075511. The reversal of 20983075497 is 79457038902.

20983075497 is a `hidden beast` number, since 2 + 0 + 9 + 83 + 0 + 75 + 497 = 666.

It is not a de Polignac number, because 20983075497 - 2¹⁰ = 20983074473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20983075417) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1409029 + ... + 1423842.

Almost surely, 2^20983075497 is an apocalyptic number.

It is an amenable number.

20983075497 is a deficient number, since it is larger than the sum of its proper divisors (9362649367).

20983075497 is a wasteful number, since it uses less digits than its factorization.

20983075497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2833700 (or 2833697 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 54.

The spelling of 20983075497 in words is "twenty billion, nine hundred eighty-three million, seventy-five thousand, four hundred ninety-seven".