12611565654031 has 4 divisors (see below), whose sum is σ = 12611603466864. Its totient is φ = 12611527841200.

The previous prime is 12611565654029. The next prime is 12611565654041. The reversal of 12611565654031 is 13045656511621.

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 12611565654031 - 2¹ = 12611565654029 is a prime.

It is a super-2 number, since 2×12611565654031² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12611565654001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18401635 + ... + 19074676.

It is an arithmetic number, because the mean of its divisors is an integer number (3152900866716).

Almost surely, 2^{12611565654031} is an apocalyptic number.

12611565654031 is a deficient number, since it is larger than the sum of its proper divisors (37812833).

12611565654031 is an equidigital number, since it uses as much as digits as its factorization.

12611565654031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37812832.

The product of its (nonzero) digits is 648000, while the sum is 46.

The spelling of 12611565654031 in words is "twelve trillion, six hundred eleven billion, five hundred sixty-five million, six hundred fifty-four thousand, thirty-one".