12695022648 has 256 divisors, whose sum is σ = 44090265600. Its totient is φ = 3288055680.

The previous prime is 12695022643. The next prime is 12695022649. The reversal of 12695022648 is 84622059621.

It is a super-2 number, since 2×12695022648² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12695022643) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7367115 + ... + 7368837.

It is an arithmetic number, because the mean of its divisors is an integer number (172227600).

Almost surely, 2^12695022648 is an apocalyptic number.

12695022648 is a gapful number since it is divisible by the number (18) 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 12695022648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22045132800).

12695022648 is an abundant number, since it is smaller than the sum of its proper divisors (31395242952).

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

12695022648 is a wasteful number, since it uses less digits than its factorization.

12695022648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2199 (or 2189 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The spelling of 12695022648 in words is "twelve billion, six hundred ninety-five million, twenty-two thousand, six hundred forty-eight".