12041617640 has 32 divisors (see below), whose sum is σ = 29177767080. Its totient is φ = 4446135552.

The previous prime is 12041617619. The next prime is 12041617661. The reversal of 12041617640 is 4671614021.

It is an interprime number because it is at equal distance from previous prime (12041617619) and next prime (12041617661).

It can be written as a sum of positive squares in 4 ways, for example, as 11068302436 + 973315204 = 105206^2 + 31198^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12041617597 and 12041617606.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11577959 + ... + 11578998.

Almost surely, 2^12041617640 is an apocalyptic number.

12041617640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12041617640 is an abundant number, since it is smaller than the sum of its proper divisors (17136149440).

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

12041617640 is a wasteful number, since it uses less digits than its factorization.

12041617640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23156981 (or 23156977 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The spelling of 12041617640 in words is "twelve billion, forty-one million, six hundred seventeen thousand, six hundred forty".