12435423347 has 16 divisors (see below), whose sum is σ = 13309775424. Its totient is φ = 11577600000.

The previous prime is 12435423323. The next prime is 12435423349. The reversal of 12435423347 is 74332453421.

It is a cyclic number.

It is not a de Polignac number, because 12435423347 - 2¹⁶ = 12435357811 is a prime.

It is a super-2 number, since 2×12435423347² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12435423347.

It is not an unprimeable number, because it can be changed into a prime (12435423349) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 608597 + ... + 628697.

It is an arithmetic number, because the mean of its divisors is an integer number (831860964).

Almost surely, 2^12435423347 is an apocalyptic number.

12435423347 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

12435423347 is a deficient number, since it is larger than the sum of its proper divisors (874352077).

12435423347 is a wasteful number, since it uses less digits than its factorization.

12435423347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20510.

The product of its digits is 241920, while the sum is 38.

Adding to 12435423347 its reverse (74332453421), we get a palindrome (86767876768).

The spelling of 12435423347 in words is "twelve billion, four hundred thirty-five million, four hundred twenty-three thousand, three hundred forty-seven".