12906657285 has 16 divisors (see below), whose sum is σ = 20899456704. Its totient is φ = 6800615552.

The previous prime is 12906657271. The next prime is 12906657287. The reversal of 12906657285 is 58275660921.

It is a cyclic number.

It is not a de Polignac number, because 12906657285 - 2⁶ = 12906657221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12906657287) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5182152 + ... + 5184641.

It is an arithmetic number, because the mean of its divisors is an integer number (1306216044).

Almost surely, 2^12906657285 is an apocalyptic number.

12906657285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12906657285 is a deficient number, since it is larger than the sum of its proper divisors (7992799419).

12906657285 is a wasteful number, since it uses less digits than its factorization.

12906657285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10366884.

The product of its (nonzero) digits is 1814400, while the sum is 51.

The spelling of 12906657285 in words is "twelve billion, nine hundred six million, six hundred fifty-seven thousand, two hundred eighty-five".