57145521853 has 16 divisors (see below), whose sum is σ = 66939125760. Its totient is φ = 47772483696.

The previous prime is 57145521803. The next prime is 57145521857. The reversal of 57145521853 is 35812554175.

It is not a de Polignac number, because 57145521853 - 2³³ = 48555587261 is a prime.

It is a super-2 number, since 2×57145521853² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57145521857) 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, 492301 + ... + 597202.

It is an arithmetic number, because the mean of its divisors is an integer number (4183695360).

Almost surely, 2^57145521853 is an apocalyptic number.

It is an amenable number.

57145521853 is a deficient number, since it is larger than the sum of its proper divisors (9793603907).

57145521853 is a wasteful number, since it uses less digits than its factorization.

57145521853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1089696.

The product of its digits is 840000, while the sum is 46.

The spelling of 57145521853 in words is "fifty-seven billion, one hundred forty-five million, five hundred twenty-one thousand, eight hundred fifty-three".