12266750761 has 4 divisors (see below), whose sum is σ = 12305941972. Its totient is φ = 12227559552.

The previous prime is 12266750753. The next prime is 12266750777. The reversal of 12266750761 is 16705766221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6171045136 + 6095705625 = 78556^2 + 78075^2 .

It is a cyclic number.

It is not a de Polignac number, because 12266750761 - 2³ = 12266750753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12266750791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19595136 + ... + 19595761.

It is an arithmetic number, because the mean of its divisors is an integer number (3076485493).

Almost surely, 2^12266750761 is an apocalyptic number.

It is an amenable number.

12266750761 is a deficient number, since it is larger than the sum of its proper divisors (39191211).

12266750761 is an equidigital number, since it uses as much as digits as its factorization.

12266750761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39191210.

The product of its (nonzero) digits is 211680, while the sum is 43.

The spelling of 12266750761 in words is "twelve billion, two hundred sixty-six million, seven hundred fifty thousand, seven hundred sixty-one".