20444149454 has 8 divisors (see below), whose sum is σ = 32280236040. Its totient is φ = 9684070776.

The previous prime is 20444149433. The next prime is 20444149471. The reversal of 20444149454 is 45494144402.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 269001929 + ... + 269002004.

It is an arithmetic number, because the mean of its divisors is an integer number (4035029505).

Almost surely, 2^20444149454 is an apocalyptic number.

20444149454 is a deficient number, since it is larger than the sum of its proper divisors (11836086586).

20444149454 is a wasteful number, since it uses less digits than its factorization.

20444149454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538003954.

The product of its (nonzero) digits is 368640, while the sum is 41.

The spelling of 20444149454 in words is "twenty billion, four hundred forty-four million, one hundred forty-nine thousand, four hundred fifty-four".