55321038755728 has 20 divisors (see below), whose sum is σ = 107196942928768. Its totient is φ = 27657311548320.

The previous prime is 55321038755713. The next prime is 55321038755867. The reversal of 55321038755728 is 82755783012355.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200347068 + ... + 200623003.

Almost surely, 2^{55321038755728} is an apocalyptic number.

It is an amenable number.

55321038755728 is a deficient number, since it is larger than the sum of its proper divisors (51875904173040).

55321038755728 is a wasteful number, since it uses less digits than its factorization.

55321038755728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400978702 (or 400978696 counting only the distinct ones).

The product of its (nonzero) digits is 70560000, while the sum is 61.

The spelling of 55321038755728 in words is "fifty-five trillion, three hundred twenty-one billion, thirty-eight million, seven hundred fifty-five thousand, seven hundred twenty-eight".