20544884950463 has 4 divisors (see below), whose sum is σ = 20557020147048. Its totient is φ = 20532749753880.

The previous prime is 20544884950459. The next prime is 20544884950477. The reversal of 20544884950463 is 36405948844502.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20544884950463 - 2² = 20544884950459 is a prime.

It is a super-2 number, since 2×20544884950463² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20544884950396 and 20544884950405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20544884950423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6067595753 + ... + 6067599138.

It is an arithmetic number, because the mean of its divisors is an integer number (5139255036762).

Almost surely, 2^{20544884950463} is an apocalyptic number.

20544884950463 is a deficient number, since it is larger than the sum of its proper divisors (12135196585).

20544884950463 is a wasteful number, since it uses less digits than its factorization.

20544884950463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12135196584.

The product of its (nonzero) digits is 132710400, while the sum is 62.

The spelling of 20544884950463 in words is "twenty trillion, five hundred forty-four billion, eight hundred eighty-four million, nine hundred fifty thousand, four hundred sixty-three".