12651523946985 has 96 divisors (see below), whose sum is σ = 25690470233472. Its totient is φ = 5257268997120.

The previous prime is 12651523946927. The next prime is 12651523946993. The reversal of 12651523946985 is 58964932515621.

It is not a de Polignac number, because 12651523946985 - 2²⁰ = 12651522898409 is a prime.

It is a super-2 number, since 2×12651523946985² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 90457869 + ... + 90597621.

It is an arithmetic number, because the mean of its divisors is an integer number (267609064932).

Almost surely, 2^{12651523946985} is an apocalyptic number.

12651523946985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12651523946985 is an abundant number, since it is smaller than the sum of its proper divisors (13038946286487).

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

12651523946985 is a wasteful number, since it uses less digits than its factorization.

12651523946985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150983 (or 150976 counting only the distinct ones).

The product of its digits is 139968000, while the sum is 66.

The spelling of 12651523946985 in words is "twelve trillion, six hundred fifty-one billion, five hundred twenty-three million, nine hundred forty-six thousand, nine hundred eighty-five".