5555667778344 has 128 divisors (see below), whose sum is σ = 15931673472000. Its totient is φ = 1791988531200.

The previous prime is 5555667778327. The next prime is 5555667778351. The reversal of 5555667778344 is 4438777665555.

5555667778344 is a `hidden beast` number, since 5 + 5 + 556 + 67 + 7 + 7 + 8 + 3 + 4 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89970072 + ... + 90031800.

It is an arithmetic number, because the mean of its divisors is an integer number (124466199000).

Almost surely, 2^{5555667778344} is an apocalyptic number.

5555667778344 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5555667778344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7965836736000).

5555667778344 is an abundant number, since it is smaller than the sum of its proper divisors (10376005693656).

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

5555667778344 is a wasteful number, since it uses less digits than its factorization.

5555667778344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75216 (or 75206 counting only the distinct ones).

The product of its digits is 2963520000, while the sum is 72.

The spelling of 5555667778344 in words is "five trillion, five hundred fifty-five billion, six hundred sixty-seven million, seven hundred seventy-eight thousand, three hundred forty-four".