12072757261 has 2 divisors, whose sum is σ = 12072757262. Its totient is φ = 12072757260.

The previous prime is 12072757259. The next prime is 12072757267. The reversal of 12072757261 is 16275727021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12002298025 + 70459236 = 109555^2 + 8394^2 .

It is a cyclic number.

It is not a de Polignac number, because 12072757261 - 2¹ = 12072757259 is a prime.

Together with 12072757259, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12072757267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6036378630 + 6036378631.

It is an arithmetic number, because the mean of its divisors is an integer number (6036378631).

Almost surely, 2^12072757261 is an apocalyptic number.

It is an amenable number.

12072757261 is a deficient number, since it is larger than the sum of its proper divisors (1).

12072757261 is an equidigital number, since it uses as much as digits as its factorization.

12072757261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82320, while the sum is 40.

The spelling of 12072757261 in words is "twelve billion, seventy-two million, seven hundred fifty-seven thousand, two hundred sixty-one".