12897405534 has 16 divisors (see below), whose sum is σ = 27779027472. Its totient is φ = 3968432448.

The previous prime is 12897405527. The next prime is 12897405553. The reversal of 12897405534 is 43550479821.

12897405534 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82675599 + ... + 82675754.

It is an arithmetic number, because the mean of its divisors is an integer number (1736189217).

Almost surely, 2^12897405534 is an apocalyptic number.

12897405534 is an abundant number, since it is smaller than the sum of its proper divisors (14881621938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12897405534 is a wasteful number, since it uses less digits than its factorization.

12897405534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165351371.

The product of its (nonzero) digits is 1209600, while the sum is 48.

The spelling of 12897405534 in words is "twelve billion, eight hundred ninety-seven million, four hundred five thousand, five hundred thirty-four".