57123211787 has 2 divisors, whose sum is σ = 57123211788. Its totient is φ = 57123211786.

The previous prime is 57123211757. The next prime is 57123211813. The reversal of 57123211787 is 78711232175.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57123211787 - 2¹⁴ = 57123195403 is a prime.

It is a super-2 number, since 2×57123211787² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (57123211727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28561605893 + 28561605894.

It is an arithmetic number, because the mean of its divisors is an integer number (28561605894).

Almost surely, 2^57123211787 is an apocalyptic number.

57123211787 is a deficient number, since it is larger than the sum of its proper divisors (1).

57123211787 is an equidigital number, since it uses as much as digits as its factorization.

57123211787 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 164640, while the sum is 44.

The spelling of 57123211787 in words is "fifty-seven billion, one hundred twenty-three million, two hundred eleven thousand, seven hundred eighty-seven".