12672242717381 has 4 divisors (see below), whose sum is σ = 13647030618732. Its totient is φ = 11697454816032.

The previous prime is 12672242717359. The next prime is 12672242717401. The reversal of 12672242717381 is 18371724227621.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 643893904900 + 12028348812481 = 802430^2 + 3468191^2 .

It is a cyclic number.

It is not a de Polignac number, because 12672242717381 - 2⁶ = 12672242717317 is a prime.

It is a super-2 number, since 2×12672242717381² (a number of 27 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 (12672242717311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 487393950656 + ... + 487393950681.

It is an arithmetic number, because the mean of its divisors is an integer number (3411757654683).

Almost surely, 2^{12672242717381} is an apocalyptic number.

It is an amenable number.

12672242717381 is a deficient number, since it is larger than the sum of its proper divisors (974787901351).

12672242717381 is an equidigital number, since it uses as much as digits as its factorization.

12672242717381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 974787901350.

The product of its digits is 3161088, while the sum is 53.

The spelling of 12672242717381 in words is "twelve trillion, six hundred seventy-two billion, two hundred forty-two million, seven hundred seventeen thousand, three hundred eighty-one".