12361421677 has 16 divisors (see below), whose sum is σ = 13910877504. Its totient is φ = 10888416000.

The previous prime is 12361421671. The next prime is 12361421693. The reversal of 12361421677 is 77612416321.

12361421677 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-12361421677 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 (12361421671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92524 + ... + 182437.

It is an arithmetic number, because the mean of its divisors is an integer number (869429844).

Almost surely, 2^12361421677 is an apocalyptic number.

It is an amenable number.

12361421677 is a deficient number, since it is larger than the sum of its proper divisors (1549455827).

12361421677 is a wasteful number, since it uses less digits than its factorization.

12361421677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275100.

The product of its digits is 84672, while the sum is 40.

Adding to 12361421677 its reverse (77612416321), we get a palindrome (89973837998).

The spelling of 12361421677 in words is "twelve billion, three hundred sixty-one million, four hundred twenty-one thousand, six hundred seventy-seven".