12643071613877 has 4 divisors (see below), whose sum is σ = 13308496435680. Its totient is φ = 11977646792076.

The previous prime is 12643071613871. The next prime is 12643071613933. The reversal of 12643071613877 is 77831617034621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12643071613877 - 2⁶ = 12643071613813 is a prime.

It is a super-2 number, since 2×12643071613877² (a number of 27 digits) contains 22 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 (12643071613871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 332712410873 + ... + 332712410910.

It is an arithmetic number, because the mean of its divisors is an integer number (3327124108920).

Almost surely, 2^{12643071613877} is an apocalyptic number.

It is an amenable number.

12643071613877 is a deficient number, since it is larger than the sum of its proper divisors (665424821803).

12643071613877 is an equidigital number, since it uses as much as digits as its factorization.

12643071613877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665424821802.

The product of its (nonzero) digits is 7112448, while the sum is 56.

The spelling of 12643071613877 in words is "twelve trillion, six hundred forty-three billion, seventy-one million, six hundred thirteen thousand, eight hundred seventy-seven".