20844575067489 has 8 divisors (see below), whose sum is σ = 27865332728832. Its totient is φ = 13860100392240.

The previous prime is 20844575067457. The next prime is 20844575067527. The reversal of 20844575067489 is 98476057544802.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20844575067489 - 2⁵ = 20844575067457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20844575067419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9070745182 + ... + 9070747479.

It is an arithmetic number, because the mean of its divisors is an integer number (3483166591104).

Almost surely, 2^{20844575067489} is an apocalyptic number.

It is an amenable number.

20844575067489 is a deficient number, since it is larger than the sum of its proper divisors (7020757661343).

20844575067489 is a wasteful number, since it uses less digits than its factorization.

20844575067489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18141493047.

The product of its (nonzero) digits is 541900800, while the sum is 69.

The spelling of 20844575067489 in words is "twenty trillion, eight hundred forty-four billion, five hundred seventy-five million, sixty-seven thousand, four hundred eighty-nine".