12775377891651 has 4 divisors (see below), whose sum is σ = 17033837188872. Its totient is φ = 8516918594432.

The previous prime is 12775377891649. The next prime is 12775377891659. The reversal of 12775377891651 is 15619877357721.

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

It is a cyclic number.

It is not a de Polignac number, because 12775377891651 - 2¹ = 12775377891649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12775377891659) 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, 2129229648606 + ... + 2129229648611.

It is an arithmetic number, because the mean of its divisors is an integer number (4258459297218).

Almost surely, 2^{12775377891651} is an apocalyptic number.

12775377891651 is a deficient number, since it is larger than the sum of its proper divisors (4258459297221).

12775377891651 is an equidigital number, since it uses as much as digits as its factorization.

12775377891651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4258459297220.

The product of its digits is 155584800, while the sum is 69.

The spelling of 12775377891651 in words is "twelve trillion, seven hundred seventy-five billion, three hundred seventy-seven million, eight hundred ninety-one thousand, six hundred fifty-one".