57516112121749 has 2 divisors, whose sum is σ = 57516112121750. Its totient is φ = 57516112121748.

The previous prime is 57516112121723. The next prime is 57516112121803. The reversal of 57516112121749 is 94712121161575.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56540398842225 + 975713279524 = 7519335^2 + 987782^2 .

It is a cyclic number.

It is not a de Polignac number, because 57516112121749 - 2¹¹ = 57516112119701 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 57516112121696 and 57516112121705.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57516112121249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28758056060874 + 28758056060875.

It is an arithmetic number, because the mean of its divisors is an integer number (28758056060875).

Almost surely, 2^{57516112121749} is an apocalyptic number.

It is an amenable number.

57516112121749 is a deficient number, since it is larger than the sum of its proper divisors (1).

57516112121749 is an equidigital number, since it uses as much as digits as its factorization.

57516112121749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1058400, while the sum is 52.

The spelling of 57516112121749 in words is "fifty-seven trillion, five hundred sixteen billion, one hundred twelve million, one hundred twenty-one thousand, seven hundred forty-nine".