44845655421 has 32 divisors (see below), whose sum is σ = 68735193088. Its totient is φ = 25476897600.

The previous prime is 44845655389. The next prime is 44845655489. The reversal of 44845655421 is 12455654844.

It is not a de Polignac number, because 44845655421 - 2⁵ = 44845655389 is a prime.

It is a super-4 number, since 4×44845655421⁴ (a number of 44 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44845655021) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 2684946 + ... + 2701596.

It is an arithmetic number, because the mean of its divisors is an integer number (2147974784).

Almost surely, 2^44845655421 is an apocalyptic number.

It is an amenable number.

44845655421 is a deficient number, since it is larger than the sum of its proper divisors (23889537667).

44845655421 is a wasteful number, since it uses less digits than its factorization.

44845655421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17401.

The product of its digits is 3072000, while the sum is 48.

The spelling of 44845655421 in words is "forty-four billion, eight hundred forty-five million, six hundred fifty-five thousand, four hundred twenty-one".