57100538881 has 2 divisors, whose sum is σ = 57100538882. Its totient is φ = 57100538880.

The previous prime is 57100538879. The next prime is 57100538897. The reversal of 57100538881 is 18883500175.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56244391281 + 856147600 = 237159^2 + 29260^2 .

It is a cyclic number.

It is not a de Polignac number, because 57100538881 - 2¹ = 57100538879 is a prime.

It is a super-2 number, since 2×57100538881² (a number of 22 digits) contains 22 as substring.

Together with 57100538879, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (57100538681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28550269440 + 28550269441.

It is an arithmetic number, because the mean of its divisors is an integer number (28550269441).

Almost surely, 2^57100538881 is an apocalyptic number.

It is an amenable number.

57100538881 is a deficient number, since it is larger than the sum of its proper divisors (1).

57100538881 is an equidigital number, since it uses as much as digits as its factorization.

57100538881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 268800, while the sum is 46.

The spelling of 57100538881 in words is "fifty-seven billion, one hundred million, five hundred thirty-eight thousand, eight hundred eighty-one".