57428909255 has 4 divisors (see below), whose sum is σ = 68914691112. Its totient is φ = 45943127400.

The previous prime is 57428909207. The next prime is 57428909297. The reversal of 57428909255 is 55290982475.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-57428909255 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 57428909255.

It is a congruent number.

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, 5742890921 + ... + 5742890930.

It is an arithmetic number, because the mean of its divisors is an integer number (17228672778).

Almost surely, 2^57428909255 is an apocalyptic number.

57428909255 is a deficient number, since it is larger than the sum of its proper divisors (11485781857).

57428909255 is a wasteful number, since it uses less digits than its factorization.

57428909255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11485781856.

The product of its (nonzero) digits is 9072000, while the sum is 56.

The spelling of 57428909255 in words is "fifty-seven billion, four hundred twenty-eight million, nine hundred nine thousand, two hundred fifty-five".