55545564545040 has 160 divisors (see below), whose sum is σ = 174609221080320. Its totient is φ = 14605387481088.

The previous prime is 55545564544963. The next prime is 55545564545101. The reversal of 55545564545040 is 4054546554555.

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, 937896 + ... + 10581624.

It is an arithmetic number, because the mean of its divisors is an integer number (1091307631752).

Almost surely, 2^{55545564545040} 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 55545564545040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87304610540160).

55545564545040 is an abundant number, since it is smaller than the sum of its proper divisors (119063656535280).

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

55545564545040 is a wasteful number, since it uses less digits than its factorization.

55545564545040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9644081 (or 9644075 counting only the distinct ones).

The product of its (nonzero) digits is 120000000, while the sum is 57.

The spelling of 55545564545040 in words is "fifty-five trillion, five hundred forty-five billion, five hundred sixty-four million, five hundred forty-five thousand, forty".