55140552240 has 80 divisors (see below), whose sum is σ = 171073500000. Its totient is φ = 14692294656.

The previous prime is 55140552217. The next prime is 55140552253. The reversal of 55140552240 is 4225504155.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 207786 + ... + 391734.

It is an arithmetic number, because the mean of its divisors is an integer number (2138418750).

Almost surely, 2^55140552240 is an apocalyptic number.

It is an amenable number.

55140552240 is an abundant number, since it is smaller than the sum of its proper divisors (115932947760).

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

55140552240 is a wasteful number, since it uses less digits than its factorization.

55140552240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185214 (or 185208 counting only the distinct ones).

The product of its (nonzero) digits is 40000, while the sum is 33.

The spelling of 55140552240 in words is "fifty-five billion, one hundred forty million, five hundred fifty-two thousand, two hundred forty".