12723795381 has 16 divisors (see below), whose sum is σ = 18511479360. Its totient is φ = 7709665920.

The previous prime is 12723795373. The next prime is 12723795389. The reversal of 12723795381 is 18359732721.

It is an interprime number because it is at equal distance from previous prime (12723795373) and next prime (12723795389).

It is not a de Polignac number, because 12723795381 - 2³ = 12723795373 is a prime.

It is a super-2 number, since 2×12723795381² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12723795381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12723795389) 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, 115291 + ... + 196823.

It is an arithmetic number, because the mean of its divisors is an integer number (1156967460).

Almost surely, 2^12723795381 is an apocalyptic number.

12723795381 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12723795381 is a deficient number, since it is larger than the sum of its proper divisors (5787683979).

12723795381 is a wasteful number, since it uses less digits than its factorization.

12723795381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86276.

The product of its digits is 635040, while the sum is 48.

The spelling of 12723795381 in words is "twelve billion, seven hundred twenty-three million, seven hundred ninety-five thousand, three hundred eighty-one".