4444445555556 has 12 divisors (see below), whose sum is σ = 10370372962992. Its totient is φ = 1481481851848.

The previous prime is 4444445555549. The next prime is 4444445555567. The reversal of 4444445555556 is 6555555444444.

It is a tau number, because it is divible by the number of its divisors (12).

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 4444445555556.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185185231470 + ... + 185185231493.

It is an arithmetic number, because the mean of its divisors is an integer number (864197746916).

Almost surely, 2^{4444445555556} is an apocalyptic number.

4444445555556 is the 1333334-th centered pentagonal number.

It is an amenable number.

4444445555556 is an abundant number, since it is smaller than the sum of its proper divisors (5925927407436).

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

4444445555556 is a wasteful number, since it uses less digits than its factorization.

4444445555556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370370462970 (or 370370462968 counting only the distinct ones).

The product of its digits is 384000000, while the sum is 60.

The spelling of 4444445555556 in words is "four trillion, four hundred forty-four billion, four hundred forty-five million, five hundred fifty-five thousand, five hundred fifty-six".