55257056378428 has 48 divisors (see below), whose sum is σ = 103079843697600. Its totient is φ = 25827648961536.

The previous prime is 55257056378399. The next prime is 55257056378429. The reversal of 55257056378428 is 82487365075255.

55257056378428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55257056378429) 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 15 ways as a sum of consecutive naturals, for example, 252856426 + ... + 253074862.

It is an arithmetic number, because the mean of its divisors is an integer number (2147496743700).

Almost surely, 2^{55257056378428} is an apocalyptic number.

It is an amenable number.

55257056378428 is a deficient number, since it is larger than the sum of its proper divisors (47822787319172).

55257056378428 is a wasteful number, since it uses less digits than its factorization.

55257056378428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243574 (or 243572 counting only the distinct ones).

The product of its (nonzero) digits is 564480000, while the sum is 67.

The spelling of 55257056378428 in words is "fifty-five trillion, two hundred fifty-seven billion, fifty-six million, three hundred seventy-eight thousand, four hundred twenty-eight".