57721619370841 has 2 divisors, whose sum is σ = 57721619370842. Its totient is φ = 57721619370840.

The previous prime is 57721619370839. The next prime is 57721619370893. The reversal of 57721619370841 is 14807391612775.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42892073033616 + 14829546337225 = 6549204^2 + 3850915^2 .

It is a cyclic number.

It is not a de Polignac number, because 57721619370841 - 2¹ = 57721619370839 is a prime.

Together with 57721619370839, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 57721619370841.

It is not a weakly prime, because it can be changed into another prime (57721679370841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28860809685420 + 28860809685421.

It is an arithmetic number, because the mean of its divisors is an integer number (28860809685421).

It is a 1-persistent number, because it is pandigital, but 2⋅57721619370841 = 115443238741682 is not.

Almost surely, 2^{57721619370841} is an apocalyptic number.

It is an amenable number.

57721619370841 is a deficient number, since it is larger than the sum of its proper divisors (1).

57721619370841 is an equidigital number, since it uses as much as digits as its factorization.

57721619370841 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17781120, while the sum is 61.

The spelling of 57721619370841 in words is "fifty-seven trillion, seven hundred twenty-one billion, six hundred nineteen million, three hundred seventy thousand, eight hundred forty-one".