12966161257623 has 16 divisors (see below), whose sum is σ = 19767373113600. Its totient is φ = 7405705091136.

The previous prime is 12966161257619. The next prime is 12966161257661. The reversal of 12966161257623 is 32675216166921.

It is not a de Polignac number, because 12966161257623 - 2² = 12966161257619 is a prime.

It is a super-2 number, since 2×12966161257623² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12966161257123) 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, 147034590 + ... + 147122747.

It is an arithmetic number, because the mean of its divisors is an integer number (1235460819600).

Almost surely, 2^{12966161257623} is an apocalyptic number.

12966161257623 is a deficient number, since it is larger than the sum of its proper divisors (6801211855977).

12966161257623 is a wasteful number, since it uses less digits than its factorization.

12966161257623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294159446.

The product of its digits is 9797760, while the sum is 57.

The spelling of 12966161257623 in words is "twelve trillion, nine hundred sixty-six billion, one hundred sixty-one million, two hundred fifty-seven thousand, six hundred twenty-three".