57089978569 has 4 divisors (see below), whose sum is σ = 61481515396. Its totient is φ = 52698441744.

The previous prime is 57089978531. The next prime is 57089978591. The reversal of 57089978569 is 96587998075.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3457440000 + 53632538569 = 58800^2 + 231587^2 .

It is not a de Polignac number, because 57089978569 - 2⁷ = 57089978441 is a prime.

It is a super-2 number, since 2×57089978569² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57089978069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2195768394 + ... + 2195768419.

It is an arithmetic number, because the mean of its divisors is an integer number (15370378849).

Almost surely, 2^57089978569 is an apocalyptic number.

It is an amenable number.

57089978569 is a deficient number, since it is larger than the sum of its proper divisors (4391536827).

57089978569 is a wasteful number, since it uses less digits than its factorization.

57089978569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4391536826.

The product of its (nonzero) digits is 342921600, while the sum is 73.

The spelling of 57089978569 in words is "fifty-seven billion, eighty-nine million, nine hundred seventy-eight thousand, five hundred sixty-nine".