2112539761 has 2 divisors, whose sum is σ = 2112539762. Its totient is φ = 2112539760.

The previous prime is 2112539747. The next prime is 2112539777. The reversal of 2112539761 is 1679352112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1396442161 + 716097600 = 37369^2 + 26760^2 .

It is a cyclic number.

It is not a de Polignac number, because 2112539761 - 2⁵ = 2112539729 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2112539761.

It is not a weakly prime, because it can be changed into another prime (2112539701) 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, 1056269880 + 1056269881.

It is an arithmetic number, because the mean of its divisors is an integer number (1056269881).

Almost surely, 2^2112539761 is an apocalyptic number.

It is an amenable number.

2112539761 is a deficient number, since it is larger than the sum of its proper divisors (1).

2112539761 is an equidigital number, since it uses as much as digits as its factorization.

2112539761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 37.

The square root of 2112539761 is about 45962.3733177476. The cubic root of 2112539761 is about 1283.1230220532.

The spelling of 2112539761 in words is "two billion, one hundred twelve million, five hundred thirty-nine thousand, seven hundred sixty-one".