12669145801 has 4 divisors (see below), whose sum is σ = 13643695492. Its totient is φ = 11694596112.

The previous prime is 12669145777. The next prime is 12669145859. The reversal of 12669145801 is 10854196621.

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 6288331401 + 6380814400 = 79299^2 + 79880^2 .

It is a cyclic number.

It is not a de Polignac number, because 12669145801 - 2³¹ = 10521662153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12669145891) 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, 487274826 + ... + 487274851.

It is an arithmetic number, because the mean of its divisors is an integer number (3410923873).

Almost surely, 2^12669145801 is an apocalyptic number.

It is an amenable number.

12669145801 is a deficient number, since it is larger than the sum of its proper divisors (974549691).

12669145801 is an equidigital number, since it uses as much as digits as its factorization.

12669145801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 974549690.

The product of its (nonzero) digits is 103680, while the sum is 43.

The spelling of 12669145801 in words is "twelve billion, six hundred sixty-nine million, one hundred forty-five thousand, eight hundred one".