12865065654 has 32 divisors (see below), whose sum is σ = 29534296320. Its totient is φ = 3659679072.

The previous prime is 12865065641. The next prime is 12865065659. The reversal of 12865065654 is 45656056821.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12865065659) 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, 659184 + ... + 678419.

It is an arithmetic number, because the mean of its divisors is an integer number (922946760).

Almost surely, 2^12865065654 is an apocalyptic number.

12865065654 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12865065654 is an abundant number, since it is smaller than the sum of its proper divisors (16669230666).

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

12865065654 is a wasteful number, since it uses less digits than its factorization.

12865065654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1337844.

The product of its (nonzero) digits is 1728000, while the sum is 48.

The spelling of 12865065654 in words is "twelve billion, eight hundred sixty-five million, sixty-five thousand, six hundred fifty-four".