12775421531643 has 8 divisors (see below), whose sum is σ = 17313139562256. Its totient is φ = 8377325594400.

The previous prime is 12775421531567. The next prime is 12775421531687. The reversal of 12775421531643 is 34613512457721.

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

It is not a de Polignac number, because 12775421531643 - 2¹⁶ = 12775421466107 is a prime.

It is a super-2 number, since 2×12775421531643² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12775421131643) 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, 34905523128 + ... + 34905523493.

It is an arithmetic number, because the mean of its divisors is an integer number (2164142445282).

Almost surely, 2^{12775421531643} is an apocalyptic number.

12775421531643 is a deficient number, since it is larger than the sum of its proper divisors (4537718030613).

12775421531643 is an equidigital number, since it uses as much as digits as its factorization.

12775421531643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69811046685.

The product of its digits is 4233600, while the sum is 51.

The spelling of 12775421531643 in words is "twelve trillion, seven hundred seventy-five billion, four hundred twenty-one million, five hundred thirty-one thousand, six hundred forty-three".