12477691007 has 4 divisors (see below), whose sum is σ = 12782024976. Its totient is φ = 12173357040.

The previous prime is 12477690997. The next prime is 12477691021. The reversal of 12477691007 is 70019677421.

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

It is a cyclic number.

It is not a de Polignac number, because 12477691007 - 2¹⁸ = 12477428863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12477691027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152166923 + ... + 152167004.

It is an arithmetic number, because the mean of its divisors is an integer number (3195506244).

Almost surely, 2^12477691007 is an apocalyptic number.

12477691007 is a deficient number, since it is larger than the sum of its proper divisors (304333969).

12477691007 is an equidigital number, since it uses as much as digits as its factorization.

12477691007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304333968.

The product of its (nonzero) digits is 148176, while the sum is 44.

The spelling of 12477691007 in words is "twelve billion, four hundred seventy-seven million, six hundred ninety-one thousand, seven".