57126557478 has 32 divisors (see below), whose sum is σ = 121073066496. Its totient is φ = 17907363968.

The previous prime is 57126557417. The next prime is 57126557479. The reversal of 57126557478 is 87475562175.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57126557479) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104226 + ... + 353717.

It is an arithmetic number, because the mean of its divisors is an integer number (3783533328).

Almost surely, 2^57126557478 is an apocalyptic number.

57126557478 is an abundant number, since it is smaller than the sum of its proper divisors (63946509018).

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

57126557478 is a wasteful number, since it uses less digits than its factorization.

57126557478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459188.

The product of its digits is 16464000, while the sum is 57.

The spelling of 57126557478 in words is "fifty-seven billion, one hundred twenty-six million, five hundred fifty-seven thousand, four hundred seventy-eight".