20975540733 has 40 divisors (see below), whose sum is σ = 35835708480. Its totient is φ = 11977450560.

The previous prime is 20975540731. The next prime is 20975540743. The reversal of 20975540733 is 33704557902.

20975540733 is a `hidden beast` number, since 2 + 0 + 9 + 75 + 540 + 7 + 33 = 666.

It is not a de Polignac number, because 20975540733 - 2¹ = 20975540731 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20975540731) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 827238 + ... + 852216.

It is an arithmetic number, because the mean of its divisors is an integer number (895892712).

Almost surely, 2^20975540733 is an apocalyptic number.

It is an amenable number.

20975540733 is a deficient number, since it is larger than the sum of its proper divisors (14860167747).

20975540733 is a wasteful number, since it uses less digits than its factorization.

20975540733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26479 (or 26470 counting only the distinct ones).

The product of its (nonzero) digits is 793800, while the sum is 45.

The spelling of 20975540733 in words is "twenty billion, nine hundred seventy-five million, five hundred forty thousand, seven hundred thirty-three".