12603621646 has 64 divisors (see below), whose sum is σ = 24601522176. Its totient is φ = 4700217600.

The previous prime is 12603621631. The next prime is 12603621649. The reversal of 12603621646 is 64612630621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12603621649) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 315811 + ... + 353473.

It is an arithmetic number, because the mean of its divisors is an integer number (384398784).

Almost surely, 2^12603621646 is an apocalyptic number.

12603621646 is a deficient number, since it is larger than the sum of its proper divisors (11997900530).

12603621646 is a wasteful number, since it uses less digits than its factorization.

12603621646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37777.

The product of its (nonzero) digits is 62208, while the sum is 37.

The spelling of 12603621646 in words is "twelve billion, six hundred three million, six hundred twenty-one thousand, six hundred forty-six".