2143731523757 has 2 divisors, whose sum is σ = 2143731523758. Its totient is φ = 2143731523756.

The previous prime is 2143731523741. The next prime is 2143731523861. The reversal of 2143731523757 is 7573251373412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1897729411561 + 246002112196 = 1377581^2 + 495986^2 .

It is a cyclic number.

It is not a de Polignac number, because 2143731523757 - 2⁴ = 2143731523741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2143731523057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071865761878 + 1071865761879.

It is an arithmetic number, because the mean of its divisors is an integer number (1071865761879).

Almost surely, 2^{2143731523757} is an apocalyptic number.

It is an amenable number.

2143731523757 is a deficient number, since it is larger than the sum of its proper divisors (1).

2143731523757 is an equidigital number, since it uses as much as digits as its factorization.

2143731523757 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3704400, while the sum is 50.

The spelling of 2143731523757 in words is "two trillion, one hundred forty-three billion, seven hundred thirty-one million, five hundred twenty-three thousand, seven hundred fifty-seven".