123455235413 has 4 divisors (see below), whose sum is σ = 128822854368. Its totient is φ = 118087616460.

The previous prime is 123455235377. The next prime is 123455235433. The reversal of 123455235413 is 314532554321.

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 123455235413 - 2¹⁴ = 123455219029 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 (123455235433) 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 in 3 ways as a sum of consecutive naturals, for example, 2683809443 + ... + 2683809488.

It is an arithmetic number, because the mean of its divisors is an integer number (32205713592).

Almost surely, 2^123455235413 is an apocalyptic number.

It is an amenable number.

123455235413 is a deficient number, since it is larger than the sum of its proper divisors (5367618955).

123455235413 is an equidigital number, since it uses as much as digits as its factorization.

123455235413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5367618954.

The product of its digits is 216000, while the sum is 38.

Adding to 123455235413 its reverse (314532554321), we get a palindrome (437987789734).

The spelling of 123455235413 in words is "one hundred twenty-three billion, four hundred fifty-five million, two hundred thirty-five thousand, four hundred thirteen".