123344115537 has 4 divisors (see below), whose sum is σ = 164458820720. Its totient is φ = 82229410356.

The previous prime is 123344115533. The next prime is 123344115563. The reversal of 123344115537 is 735511443321.

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 not a de Polignac number, because 123344115537 - 2² = 123344115533 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123344115495 and 123344115504.

It is not an unprimeable number, because it can be changed into a prime (123344115533) 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, 20557352587 + ... + 20557352592.

It is an arithmetic number, because the mean of its divisors is an integer number (41114705180).

Almost surely, 2^123344115537 is an apocalyptic number.

It is an amenable number.

123344115537 is a deficient number, since it is larger than the sum of its proper divisors (41114705183).

123344115537 is an equidigital number, since it uses as much as digits as its factorization.

123344115537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41114705182.

The product of its digits is 151200, while the sum is 39.

Adding to 123344115537 its reverse (735511443321), we get a palindrome (858855558858).

The spelling of 123344115537 in words is "one hundred twenty-three billion, three hundred forty-four million, one hundred fifteen thousand, five hundred thirty-seven".