55559293440 has 160 divisors (see below), whose sum is σ = 202990043520. Its totient is φ = 12699254784.

The previous prime is 55559293409. The next prime is 55559293459. The reversal of 55559293440 is 4439295555.

It is a tau number, because it is divible by the number of its divisors (160).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 462975 + ... + 570494.

It is an arithmetic number, because the mean of its divisors is an integer number (1268687772).

Almost surely, 2^55559293440 is an apocalyptic number.

It is an amenable number.

55559293440 is an abundant number, since it is smaller than the sum of its proper divisors (147430750080).

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

55559293440 is a wasteful number, since it uses less digits than its factorization.

55559293440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1033502 (or 1033486 counting only the distinct ones).

The product of its (nonzero) digits is 4860000, while the sum is 51.

The spelling of 55559293440 in words is "fifty-five billion, five hundred fifty-nine million, two hundred ninety-three thousand, four hundred forty".