12771426445 has 16 divisors (see below), whose sum is σ = 15619443840. Its totient is φ = 10022075200.

The previous prime is 12771426401. The next prime is 12771426457. The reversal of 12771426445 is 54462417721.

It is not a de Polignac number, because 12771426445 - 2¹¹ = 12771424397 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89040 + ... + 182950.

It is an arithmetic number, because the mean of its divisors is an integer number (976215240).

Almost surely, 2^12771426445 is an apocalyptic number.

It is an amenable number.

12771426445 is a deficient number, since it is larger than the sum of its proper divisors (2848017395).

12771426445 is an equidigital number, since it uses as much as digits as its factorization.

12771426445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94436.

The product of its digits is 376320, while the sum is 43.

The spelling of 12771426445 in words is "twelve billion, seven hundred seventy-one million, four hundred twenty-six thousand, four hundred forty-five".