12735732377 has 4 divisors (see below), whose sum is σ = 12738078516. Its totient is φ = 12733386240.

The previous prime is 12735732367. The next prime is 12735732409. The reversal of 12735732377 is 77323753721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 77323753721 = 641 ⋅120629881.

It can be written as a sum of positive squares in 2 ways, for example, as 6529286416 + 6206445961 = 80804^2 + 78781^2 .

It is a cyclic number.

It is not a de Polignac number, because 12735732377 - 2⁶ = 12735732313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12735732367) 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, 1164908 + ... + 1175789.

It is an arithmetic number, because the mean of its divisors is an integer number (3184519629).

Almost surely, 2^12735732377 is an apocalyptic number.

It is an amenable number.

12735732377 is a deficient number, since it is larger than the sum of its proper divisors (2346139).

12735732377 is an equidigital number, since it uses as much as digits as its factorization.

12735732377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2346138.

The product of its digits is 1296540, while the sum is 47.

The spelling of 12735732377 in words is "twelve billion, seven hundred thirty-five million, seven hundred thirty-two thousand, three hundred seventy-seven".