12465651653 has 32 divisors (see below), whose sum is σ = 15913497600. Its totient is φ = 9497569536.

The previous prime is 12465651647. The next prime is 12465651691. The reversal of 12465651653 is 35615656421.

It is not a de Polignac number, because 12465651653 - 2²⁶ = 12398542789 is a prime.

It is a super-3 number, since 3×12465651653³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12465651643) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 1020500 + ... + 1032642.

It is an arithmetic number, because the mean of its divisors is an integer number (497296800).

Almost surely, 2^12465651653 is an apocalyptic number.

12465651653 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12465651653 is a deficient number, since it is larger than the sum of its proper divisors (3447845947).

12465651653 is a wasteful number, since it uses less digits than its factorization.

12465651653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12581.

The product of its digits is 648000, while the sum is 44.

The spelling of 12465651653 in words is "twelve billion, four hundred sixty-five million, six hundred fifty-one thousand, six hundred fifty-three".