57281889697 has 8 divisors (see below), whose sum is σ = 59170113576. Its totient is φ = 55411564032.

The previous prime is 57281889677. The next prime is 57281889727. The reversal of 57281889697 is 79698818275.

It can be written as a sum of positive squares in 4 ways, for example, as 29226979681 + 28054910016 = 170959^2 + 167496^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 57281889697 - 2⁷ = 57281889569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57281889647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4468048 + ... + 4480849.

It is an arithmetic number, because the mean of its divisors is an integer number (7396264197).

Almost surely, 2^57281889697 is an apocalyptic number.

It is an amenable number.

57281889697 is a deficient number, since it is larger than the sum of its proper divisors (1888223879).

57281889697 is a wasteful number, since it uses less digits than its factorization.

57281889697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8949107.

The product of its digits is 121927680, while the sum is 70.

The spelling of 57281889697 in words is "fifty-seven billion, two hundred eighty-one million, eight hundred eighty-nine thousand, six hundred ninety-seven".