55040628453440 has 112 divisors (see below), whose sum is σ = 157672777872000. Its totient is φ = 17877858250752.

The previous prime is 55040628453319. The next prime is 55040628453457. The reversal of 55040628453440 is 4435482604055.

It is a tau number, because it is divible by the number of its divisors (112).

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, 646581365 + ... + 646666484.

Almost surely, 2^{55040628453440} is an apocalyptic number.

It is an amenable number.

55040628453440 is an abundant number, since it is smaller than the sum of its proper divisors (102632149418560).

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

55040628453440 is a wasteful number, since it uses less digits than its factorization.

55040628453440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1293247892 (or 1293247882 counting only the distinct ones).

The product of its (nonzero) digits is 9216000, while the sum is 50.

The spelling of 55040628453440 in words is "fifty-five trillion, forty billion, six hundred twenty-eight million, four hundred fifty-three thousand, four hundred forty".