12249673957 has 8 divisors (see below), whose sum is σ = 12375705816. Its totient is φ = 12124250112.

The previous prime is 12249673897. The next prime is 12249673981. The reversal of 12249673957 is 75937694221.

It can be written as a sum of positive squares in 4 ways, for example, as 1269568161 + 10980105796 = 35631^2 + 104786^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12249673957 - 2¹⁵ = 12249641189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12249673898 and 12249673907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12249679957) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111448 + ... + 192145.

It is an arithmetic number, because the mean of its divisors is an integer number (1546963227).

Almost surely, 2^12249673957 is an apocalyptic number.

It is an amenable number.

12249673957 is a deficient number, since it is larger than the sum of its proper divisors (126031859).

12249673957 is a wasteful number, since it uses less digits than its factorization.

12249673957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304007.

The product of its digits is 5715360, while the sum is 55.

It can be divided in two parts, 12249 and 673957, that added together give a triangular number (686206 = T₁₁₇₁).

The spelling of 12249673957 in words is "twelve billion, two hundred forty-nine million, six hundred seventy-three thousand, nine hundred fifty-seven".