12361533326551 has 4 divisors (see below), whose sum is σ = 12455896176504. Its totient is φ = 12267170476600.

The previous prime is 12361533326479. The next prime is 12361533326573. The reversal of 12361533326551 is 15562333516321.

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 12361533326551 - 2¹⁵ = 12361533293783 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 (12361533326251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47181424780 + ... + 47181425041.

It is an arithmetic number, because the mean of its divisors is an integer number (3113974044126).

Almost surely, 2^{12361533326551} is an apocalyptic number.

12361533326551 is a deficient number, since it is larger than the sum of its proper divisors (94362849953).

12361533326551 is an equidigital number, since it uses as much as digits as its factorization.

12361533326551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94362849952.

The product of its digits is 1458000, while the sum is 46.

The spelling of 12361533326551 in words is "twelve trillion, three hundred sixty-one billion, five hundred thirty-three million, three hundred twenty-six thousand, five hundred fifty-one".