12923616936549 has 16 divisors (see below), whose sum is σ = 18798892715520. Its totient is φ = 7832118261360.

The previous prime is 12923616936467. The next prime is 12923616936617. The reversal of 12923616936549 is 94563961632921.

It is a de Polignac number, because none of the positive numbers 2^k-12923616936549 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12923616936549.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12923616936049) 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, 8724259 + ... + 10097520.

It is an arithmetic number, because the mean of its divisors is an integer number (1174930794720).

Almost surely, 2^{12923616936549} is an apocalyptic number.

It is an amenable number.

12923616936549 is a deficient number, since it is larger than the sum of its proper divisors (5875275778971).

12923616936549 is a wasteful number, since it uses less digits than its factorization.

12923616936549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18842600.

The product of its digits is 113374080, while the sum is 66.

The spelling of 12923616936549 in words is "twelve trillion, nine hundred twenty-three billion, six hundred sixteen million, nine hundred thirty-six thousand, five hundred forty-nine".