123445115464 has 64 divisors (see below), whose sum is σ = 259410392640. Its totient is φ = 54577071360.

The previous prime is 123445115389. The next prime is 123445115491. The reversal of 123445115464 is 464511544321.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18142287 + ... + 18149089.

It is an arithmetic number, because the mean of its divisors is an integer number (4053287385).

Almost surely, 2^123445115464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123445115464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129705196320).

123445115464 is an abundant number, since it is smaller than the sum of its proper divisors (135965277176).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123445115464 is a wasteful number, since it uses less digits than its factorization.

123445115464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12430 (or 12426 counting only the distinct ones).

The product of its digits is 230400, while the sum is 40.

Adding to 123445115464 its reverse (464511544321), we get a palindrome (587956659785).

The spelling of 123445115464 in words is "one hundred twenty-three billion, four hundred forty-five million, one hundred fifteen thousand, four hundred sixty-four".