55263424240 has 20 divisors (see below), whose sum is σ = 128487461544. Its totient is φ = 22105369664.

The previous prime is 55263424219. The next prime is 55263424241. The reversal of 55263424240 is 4242436255.

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 55263424240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55263424241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 345396322 + ... + 345396481.

Almost surely, 2^55263424240 is an apocalyptic number.

It is an amenable number.

55263424240 is an abundant number, since it is smaller than the sum of its proper divisors (73224037304).

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

55263424240 is a wasteful number, since it uses less digits than its factorization.

55263424240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690792816 (or 690792810 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 37.

The spelling of 55263424240 in words is "fifty-five billion, two hundred sixty-three million, four hundred twenty-four thousand, two hundred forty".