12950978349705 has 64 divisors (see below), whose sum is σ = 23972297545728. Its totient is φ = 5900701916160.

The previous prime is 12950978349703. The next prime is 12950978349737. The reversal of 12950978349705 is 50794387905921.

It is not a de Polignac number, because 12950978349705 - 2¹ = 12950978349703 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12950978349705.

It is not an unprimeable number, because it can be changed into a prime (12950978349703) 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 63 ways as a sum of consecutive naturals, for example, 1786669 + ... + 5393898.

It is an arithmetic number, because the mean of its divisors is an integer number (374567149152).

Almost surely, 2^{12950978349705} is an apocalyptic number.

12950978349705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12950978349705 is a deficient number, since it is larger than the sum of its proper divisors (11021319196023).

12950978349705 is a wasteful number, since it uses less digits than its factorization.

12950978349705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7181246.

The product of its (nonzero) digits is 171460800, while the sum is 69.

The spelling of 12950978349705 in words is "twelve trillion, nine hundred fifty billion, nine hundred seventy-eight million, three hundred forty-nine thousand, seven hundred five".