12741659477 has 4 divisors (see below), whose sum is σ = 13491168876. Its totient is φ = 11992150080.

The previous prime is 12741659471. The next prime is 12741659479. The reversal of 12741659477 is 77495614721.

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 7165453201 + 5576206276 = 84649^2 + 74674^2 .

It is a cyclic number.

It is not a de Polignac number, because 12741659477 - 2⁴ = 12741659461 is a prime.

It is a super-3 number, since 3×12741659477³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12741659471) 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, 374754674 + ... + 374754707.

It is an arithmetic number, because the mean of its divisors is an integer number (3372792219).

Almost surely, 2^12741659477 is an apocalyptic number.

12741659477 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

12741659477 is a deficient number, since it is larger than the sum of its proper divisors (749509399).

12741659477 is an equidigital number, since it uses as much as digits as its factorization.

12741659477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749509398.

The product of its digits is 2963520, while the sum is 53.

The spelling of 12741659477 in words is "twelve billion, seven hundred forty-one million, six hundred fifty-nine thousand, four hundred seventy-seven".