12723857069 has 16 divisors (see below), whose sum is σ = 15872133120. Its totient is φ = 9909304560.

The previous prime is 12723857063. The next prime is 12723857101. The reversal of 12723857069 is 96075832721.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12723857069 is a prime.

It is a super-2 number, since 2×12723857069² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12723857063) 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, 100712 + ... + 188654.

It is an arithmetic number, because the mean of its divisors is an integer number (992008320).

Almost surely, 2^12723857069 is an apocalyptic number.

It is an amenable number.

12723857069 is a deficient number, since it is larger than the sum of its proper divisors (3148276051).

12723857069 is a wasteful number, since it uses less digits than its factorization.

12723857069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89840.

The product of its (nonzero) digits is 1270080, while the sum is 50.

The spelling of 12723857069 in words is "twelve billion, seven hundred twenty-three million, eight hundred fifty-seven thousand, sixty-nine".