11128571457 has 8 divisors (see below), whose sum is σ = 14846295840. Its totient is φ = 7414947360.

The previous prime is 11128571423. The next prime is 11128571479. The reversal of 11128571457 is 75417582111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11128571457 - 2¹⁹ = 11128047169 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (11128571357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1018732 + ... + 1029597.

It is an arithmetic number, because the mean of its divisors is an integer number (1855786980).

Almost surely, 2^11128571457 is an apocalyptic number.

It is an amenable number.

11128571457 is a deficient number, since it is larger than the sum of its proper divisors (3717724383).

11128571457 is a wasteful number, since it uses less digits than its factorization.

11128571457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2050143.

The product of its digits is 78400, while the sum is 42.

The spelling of 11128571457 in words is "eleven billion, one hundred twenty-eight million, five hundred seventy-one thousand, four hundred fifty-seven".