12477801813 has 4 divisors (see below), whose sum is σ = 16637069088. Its totient is φ = 8318534540.

The previous prime is 12477801773. The next prime is 12477801859. The reversal of 12477801813 is 31810877421.

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 12477801813 - 2²⁶ = 12410692949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12477801113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2079633633 + ... + 2079633638.

It is an arithmetic number, because the mean of its divisors is an integer number (4159267272).

Almost surely, 2^12477801813 is an apocalyptic number.

It is an amenable number.

12477801813 is a deficient number, since it is larger than the sum of its proper divisors (4159267275).

12477801813 is an equidigital number, since it uses as much as digits as its factorization.

12477801813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4159267274.

The product of its (nonzero) digits is 75264, while the sum is 42.

The spelling of 12477801813 in words is "twelve billion, four hundred seventy-seven million, eight hundred one thousand, eight hundred thirteen".