57978082948169 has 2 divisors, whose sum is σ = 57978082948170. Its totient is φ = 57978082948168.

The previous prime is 57978082948069. The next prime is 57978082948217. The reversal of 57978082948169 is 96184928087975.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51321105015625 + 6656977932544 = 7163875^2 + 2580112^2 .

It is a cyclic number.

It is not a de Polignac number, because 57978082948169 - 2⁸ = 57978082947913 is a prime.

It is a super-2 number, since 2×57978082948169² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (57978082948069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28989041474084 + 28989041474085.

It is an arithmetic number, because the mean of its divisors is an integer number (28989041474085).

Almost surely, 2^{57978082948169} is an apocalyptic number.

It is an amenable number.

57978082948169 is a deficient number, since it is larger than the sum of its proper divisors (1).

57978082948169 is an equidigital number, since it uses as much as digits as its factorization.

57978082948169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4389396480, while the sum is 83.

The spelling of 57978082948169 in words is "fifty-seven trillion, nine hundred seventy-eight billion, eighty-two million, nine hundred forty-eight thousand, one hundred sixty-nine".