12354871232861 has 4 divisors (see below), whose sum is σ = 12362675954112. Its totient is φ = 12347066511612.

The previous prime is 12354871232849. The next prime is 12354871232867. The reversal of 12354871232861 is 16823217845321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12354871232861 - 2³⁴ = 12337691363677 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 (12354871232867) 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, 3902358251 + ... + 3902361416.

It is an arithmetic number, because the mean of its divisors is an integer number (3090668988528).

Almost surely, 2^{12354871232861} is an apocalyptic number.

It is an amenable number.

12354871232861 is a deficient number, since it is larger than the sum of its proper divisors (7804721251).

12354871232861 is an equidigital number, since it uses as much as digits as its factorization.

12354871232861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7804721250.

The product of its digits is 3870720, while the sum is 53.

The spelling of 12354871232861 in words is "twelve trillion, three hundred fifty-four billion, eight hundred seventy-one million, two hundred thirty-two thousand, eight hundred sixty-one".