12566155750071 has 32 divisors (see below), whose sum is σ = 21453766798848. Its totient is φ = 6351444109440.

The previous prime is 12566155750009. The next prime is 12566155750079. The reversal of 12566155750071 is 17005755166521.

It is not a de Polignac number, because 12566155750071 - 2⁶ = 12566155750007 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12566155749996 and 12566155750023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12566155750079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 735112300 + ... + 735129393.

It is an arithmetic number, because the mean of its divisors is an integer number (670430212464).

Almost surely, 2^{12566155750071} is an apocalyptic number.

12566155750071 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12566155750071 is a deficient number, since it is larger than the sum of its proper divisors (8887611048777).

12566155750071 is a wasteful number, since it uses less digits than its factorization.

12566155750071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1470241751.

The product of its (nonzero) digits is 2205000, while the sum is 51.

The spelling of 12566155750071 in words is "twelve trillion, five hundred sixty-six billion, one hundred fifty-five million, seven hundred fifty thousand, seventy-one".