57684784919 has 2 divisors, whose sum is σ = 57684784920. Its totient is φ = 57684784918.

The previous prime is 57684784901. The next prime is 57684784933. The reversal of 57684784919 is 91948748675.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57684784919 - 2¹⁶ = 57684719383 is a prime.

It is a super-2 number, since 2×57684784919² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57684784979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28842392459 + 28842392460.

It is an arithmetic number, because the mean of its divisors is an integer number (28842392460).

Almost surely, 2^57684784919 is an apocalyptic number.

57684784919 is a deficient number, since it is larger than the sum of its proper divisors (1).

57684784919 is an equidigital number, since it uses as much as digits as its factorization.

57684784919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 121927680, while the sum is 68.

The spelling of 57684784919 in words is "fifty-seven billion, six hundred eighty-four million, seven hundred eighty-four thousand, nine hundred nineteen".