12611001258551 has 4 divisors (see below), whose sum is σ = 12611080903152. Its totient is φ = 12610921613952.

The previous prime is 12611001258521. The next prime is 12611001258571. The reversal of 12611001258551 is 15585210011621.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12611001258551 - 2³⁰ = 12609927516727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12611001258521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39584315 + ... + 39901628.

It is an arithmetic number, because the mean of its divisors is an integer number (3152770225788).

Almost surely, 2^{12611001258551} is an apocalyptic number.

12611001258551 is a deficient number, since it is larger than the sum of its proper divisors (79644601).

12611001258551 is an equidigital number, since it uses as much as digits as its factorization.

12611001258551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79644600.

The product of its (nonzero) digits is 24000, while the sum is 38.

The spelling of 12611001258551 in words is "twelve trillion, six hundred eleven billion, one million, two hundred fifty-eight thousand, five hundred fifty-one".