20546534406 has 16 divisors (see below), whose sum is σ = 41613235200. Its totient is φ = 6762150408.

The previous prime is 20546534387. The next prime is 20546534419. The reversal of 20546534406 is 60443564502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21673086 + ... + 21674033.

It is an arithmetic number, because the mean of its divisors is an integer number (2600827200).

Almost surely, 2^20546534406 is an apocalyptic number.

20546534406 is an abundant number, since it is smaller than the sum of its proper divisors (21066700794).

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

20546534406 is a wasteful number, since it uses less digits than its factorization.

20546534406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43347203.

The product of its (nonzero) digits is 345600, while the sum is 39.

The spelling of 20546534406 in words is "twenty billion, five hundred forty-six million, five hundred thirty-four thousand, four hundred six".