12611419551 has 8 divisors (see below), whose sum is σ = 18683584560. Its totient is φ = 8407613016.

The previous prime is 12611419511. The next prime is 12611419577. The reversal of 12611419551 is 15591411621.

It is a happy number.

12611419551 is a `hidden beast` number, since 1 + 2 + 61 + 1 + 41 + 9 + 551 = 666.

It is not a de Polignac number, because 12611419551 - 2⁶ = 12611419487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12611419511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 233544780 + ... + 233544833.

It is an arithmetic number, because the mean of its divisors is an integer number (2335448070).

Almost surely, 2^12611419551 is an apocalyptic number.

12611419551 is a deficient number, since it is larger than the sum of its proper divisors (6072165009).

12611419551 is an equidigital number, since it uses as much as digits as its factorization.

12611419551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467089622 (or 467089616 counting only the distinct ones).

The product of its digits is 10800, while the sum is 36.

The spelling of 12611419551 in words is "twelve billion, six hundred eleven million, four hundred nineteen thousand, five hundred fifty-one".