12261003630 has 16 divisors (see below), whose sum is σ = 29426408784. Its totient is φ = 3269600960.

The previous prime is 12261003611. The next prime is 12261003683. The reversal of 12261003630 is 3630016221.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12261003630.

It is a congruent number.

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, 204350031 + ... + 204350090.

It is an arithmetic number, because the mean of its divisors is an integer number (1839150549).

Almost surely, 2^12261003630 is an apocalyptic number.

12261003630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12261003630 is an abundant number, since it is smaller than the sum of its proper divisors (17165405154).

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

12261003630 is a wasteful number, since it uses less digits than its factorization.

12261003630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408700131.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 12261003630 its reverse (3630016221), we get a palindrome (15891019851).

The spelling of 12261003630 in words is "twelve billion, two hundred sixty-one million, three thousand, six hundred thirty".