12867521395 has 16 divisors (see below), whose sum is σ = 15682043520. Its totient is φ = 10134543744.

The previous prime is 12867521389. The next prime is 12867521399. The reversal of 12867521395 is 59312576821.

It is a cyclic number.

It is not a de Polignac number, because 12867521395 - 2⁷ = 12867521267 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12867521399) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10374 + ... + 160756.

It is an arithmetic number, because the mean of its divisors is an integer number (980127720).

Almost surely, 2^12867521395 is an apocalyptic number.

12867521395 is a deficient number, since it is larger than the sum of its proper divisors (2814522125).

12867521395 is a wasteful number, since it uses less digits than its factorization.

12867521395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150654.

The product of its digits is 907200, while the sum is 49.

The spelling of 12867521395 in words is "twelve billion, eight hundred sixty-seven million, five hundred twenty-one thousand, three hundred ninety-five".