12261003629 has 16 divisors (see below), whose sum is σ = 14378198016. Its totient is φ = 10236067200.

The previous prime is 12261003611. The next prime is 12261003683. The reversal of 12261003629 is 92630016221.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12261003629 - 2¹² = 12260999533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12261003595 and 12261003604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12261003229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139019 + ... + 209399.

It is an arithmetic number, because the mean of its divisors is an integer number (898637376).

Almost surely, 2^12261003629 is an apocalyptic number.

It is an amenable number.

12261003629 is a deficient number, since it is larger than the sum of its proper divisors (2117194387).

12261003629 is an equidigital number, since it uses as much as digits as its factorization.

12261003629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71036.

The product of its (nonzero) digits is 7776, while the sum is 32.

The spelling of 12261003629 in words is "twelve billion, two hundred sixty-one million, three thousand, six hundred twenty-nine".