57344601661 has 4 divisors (see below), whose sum is σ = 58743250524. Its totient is φ = 55945952800.

The previous prime is 57344601647. The next prime is 57344601707. The reversal of 57344601661 is 16610644375.

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 11336925625 + 46007676036 = 106475^2 + 214494^2 .

It is a cyclic number.

It is not a de Polignac number, because 57344601661 - 2⁷ = 57344601533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57344601361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 699324370 + ... + 699324451.

It is an arithmetic number, because the mean of its divisors is an integer number (14685812631).

Almost surely, 2^57344601661 is an apocalyptic number.

It is an amenable number.

57344601661 is a deficient number, since it is larger than the sum of its proper divisors (1398648863).

57344601661 is a wasteful number, since it uses less digits than its factorization.

57344601661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1398648862.

The product of its (nonzero) digits is 362880, while the sum is 43.

The spelling of 57344601661 in words is "fifty-seven billion, three hundred forty-four million, six hundred one thousand, six hundred sixty-one".