12477639705 has 16 divisors (see below), whose sum is σ = 20079627840. Its totient is φ = 6616273088.

The previous prime is 12477639677. The next prime is 12477639737. The reversal of 12477639705 is 50793677421.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12477639705 - 2⁹ = 12477639193 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2401575 + ... + 2406764.

It is an arithmetic number, because the mean of its divisors is an integer number (1254976740).

Almost surely, 2^12477639705 is an apocalyptic number.

12477639705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12477639705 is a deficient number, since it is larger than the sum of its proper divisors (7601988135).

12477639705 is a wasteful number, since it uses less digits than its factorization.

12477639705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4808520.

The product of its (nonzero) digits is 2222640, while the sum is 51.

The spelling of 12477639705 in words is "twelve billion, four hundred seventy-seven million, six hundred thirty-nine thousand, seven hundred five".