12434421677 has 2 divisors, whose sum is σ = 12434421678. Its totient is φ = 12434421676.

The previous prime is 12434421641. The next prime is 12434421709. The reversal of 12434421677 is 77612443421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11225190601 + 1209231076 = 105949^2 + 34774^2 .

It is a cyclic number.

It is not a de Polignac number, because 12434421677 - 2¹⁴ = 12434405293 is a prime.

It is a super-2 number, since 2×12434421677² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12434424677) 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 as a sum of consecutive naturals, namely, 6217210838 + 6217210839.

It is an arithmetic number, because the mean of its divisors is an integer number (6217210839).

Almost surely, 2^12434421677 is an apocalyptic number.

It is an amenable number.

12434421677 is a deficient number, since it is larger than the sum of its proper divisors (1).

12434421677 is an equidigital number, since it uses as much as digits as its factorization.

12434421677 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 225792, while the sum is 41.

The spelling of 12434421677 in words is "twelve billion, four hundred thirty-four million, four hundred twenty-one thousand, six hundred seventy-seven".