20546409753 has 32 divisors (see below), whose sum is σ = 32163225600. Its totient is φ = 12927253968.

The previous prime is 20546409743. The next prime is 20546409761. The reversal of 20546409753 is 35790464502.

It is a de Polignac number, because none of the positive numbers 2^k-20546409753 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20546409699 and 20546409708.

It is not an unprimeable number, because it can be changed into a prime (20546409713) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58776 + ... + 211062.

It is an arithmetic number, because the mean of its divisors is an integer number (1005100800).

Almost surely, 2^20546409753 is an apocalyptic number.

It is an amenable number.

20546409753 is a deficient number, since it is larger than the sum of its proper divisors (11616815847).

20546409753 is a wasteful number, since it uses less digits than its factorization.

20546409753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152578 (or 152572 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 45.

The spelling of 20546409753 in words is "twenty billion, five hundred forty-six million, four hundred nine thousand, seven hundred fifty-three".