12854637465 has 16 divisors (see below), whose sum is σ = 21777268608. Its totient is φ = 6452523776.

The previous prime is 12854637457. The next prime is 12854637503. The reversal of 12854637465 is 56473645821.

It is a cyclic number.

It is not a de Polignac number, because 12854637465 - 2³ = 12854637457 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25204917 + ... + 25205426.

It is an arithmetic number, because the mean of its divisors is an integer number (1361079288).

Almost surely, 2^12854637465 is an apocalyptic number.

12854637465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12854637465 is a deficient number, since it is larger than the sum of its proper divisors (8922631143).

12854637465 is a wasteful number, since it uses less digits than its factorization.

12854637465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50410368.

The product of its digits is 4838400, while the sum is 51.

The spelling of 12854637465 in words is "twelve billion, eight hundred fifty-four million, six hundred thirty-seven thousand, four hundred sixty-five".