123345021164 has 12 divisors (see below), whose sum is σ = 216172630464. Its totient is φ = 61581412464.

The previous prime is 123345021083. The next prime is 123345021179. The reversal of 123345021164 is 461120543321.

It is a self number, because there is not a number n which added to its sum of digits gives 123345021164.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22771484 + ... + 22776899.

It is an arithmetic number, because the mean of its divisors is an integer number (18014385872).

Almost surely, 2^123345021164 is an apocalyptic number.

It is an amenable number.

123345021164 is a deficient number, since it is larger than the sum of its proper divisors (92827609300).

123345021164 is a wasteful number, since it uses less digits than its factorization.

123345021164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45549064 (or 45549062 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

Adding to 123345021164 its reverse (461120543321), we get a palindrome (584465564485).

The spelling of 123345021164 in words is "one hundred twenty-three billion, three hundred forty-five million, twenty-one thousand, one hundred sixty-four".