57617644157 has 8 divisors (see below), whose sum is σ = 58075254840. Its totient is φ = 57161825280.

The previous prime is 57617644127. The next prime is 57617644163. The reversal of 57617644157 is 75144671675.

It can be written as a sum of positive squares in 4 ways, for example, as 40556320996 + 17061323161 = 201386^2 + 130619^2 .

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 57617644157 - 2³⁰ = 56543902333 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 57617644099 and 57617644108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57617644127) 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, 383348 + ... + 512045.

It is an arithmetic number, because the mean of its divisors is an integer number (7259406855).

Almost surely, 2^57617644157 is an apocalyptic number.

It is an amenable number.

57617644157 is a deficient number, since it is larger than the sum of its proper divisors (457610683).

57617644157 is a wasteful number, since it uses less digits than its factorization.

57617644157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 895903.

The product of its digits is 4939200, while the sum is 53.

The spelling of 57617644157 in words is "fifty-seven billion, six hundred seventeen million, six hundred forty-four thousand, one hundred fifty-seven".