55569090145440 has 192 divisors, whose sum is σ = 175345813020672. Its totient is φ = 14792769868800.

The previous prime is 55569090145417. The next prime is 55569090145477. The reversal of 55569090145440 is 4454109096555.

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, 1347729625 + ... + 1347770855.

It is an arithmetic number, because the mean of its divisors is an integer number (913259442816).

Almost surely, 2^{55569090145440} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55569090145440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87672906510336).

55569090145440 is an abundant number, since it is smaller than the sum of its proper divisors (119776722875232).

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

55569090145440 is a wasteful number, since it uses less digits than its factorization.

55569090145440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46043 (or 46035 counting only the distinct ones).

The product of its (nonzero) digits is 19440000, while the sum is 57.

The spelling of 55569090145440 in words is "fifty-five trillion, five hundred sixty-nine billion, ninety million, one hundred forty-five thousand, four hundred forty".