12685110163440 has 320 divisors, whose sum is σ = 46224686430720. Its totient is φ = 2837025607680.

The previous prime is 12685110163373. The next prime is 12685110163469. The reversal of 12685110163440 is 4436101158621.

It is a junction number, because it is equal to n+sod(n) for n = 12685110163392 and 12685110163401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 61295179 + ... + 61501781.

It is an arithmetic number, because the mean of its divisors is an integer number (144452145096).

Almost surely, 2^{12685110163440} is an apocalyptic number.

12685110163440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12685110163440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23112343215360).

12685110163440 is an abundant number, since it is smaller than the sum of its proper divisors (33539576267280).

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

12685110163440 is a wasteful number, since it uses less digits than its factorization.

12685110163440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208432 (or 208426 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 42.

The spelling of 12685110163440 in words is "twelve trillion, six hundred eighty-five billion, one hundred ten million, one hundred sixty-three thousand, four hundred forty".