12746538623 has 32 divisors (see below), whose sum is σ = 15947108352. Its totient is φ = 9919324800.

The previous prime is 12746538619. The next prime is 12746538631. The reversal of 12746538623 is 32683564721.

It is not a de Polignac number, because 12746538623 - 2² = 12746538619 is a prime.

It is a super-2 number, since 2×12746538623² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12746538023) 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 31 ways as a sum of consecutive naturals, for example, 2989313 + ... + 2993573.

It is an arithmetic number, because the mean of its divisors is an integer number (498347136).

Almost surely, 2^12746538623 is an apocalyptic number.

12746538623 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12746538623 is a deficient number, since it is larger than the sum of its proper divisors (3200569729).

12746538623 is a wasteful number, since it uses less digits than its factorization.

12746538623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4815.

The product of its digits is 1451520, while the sum is 47.

The spelling of 12746538623 in words is "twelve billion, seven hundred forty-six million, five hundred thirty-eight thousand, six hundred twenty-three".