57648007181 has 2 divisors, whose sum is σ = 57648007182. Its totient is φ = 57648007180.

The previous prime is 57648007169. The next prime is 57648007211. The reversal of 57648007181 is 18170084675.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57355939081 + 292068100 = 239491^2 + 17090^2 .

It is a cyclic number.

It is not a de Polignac number, because 57648007181 - 2¹⁸ = 57647745037 is a prime.

It is a super-2 number, since 2×57648007181² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57648007381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28824003590 + 28824003591.

It is an arithmetic number, because the mean of its divisors is an integer number (28824003591).

Almost surely, 2^57648007181 is an apocalyptic number.

It is an amenable number.

57648007181 is a deficient number, since it is larger than the sum of its proper divisors (1).

57648007181 is an equidigital number, since it uses as much as digits as its factorization.

57648007181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 376320, while the sum is 47.

The spelling of 57648007181 in words is "fifty-seven billion, six hundred forty-eight million, seven thousand, one hundred eighty-one".