123345017372 has 12 divisors (see below), whose sum is σ = 215871459720. Its totient is φ = 61667457456.

The previous prime is 123345017363. The next prime is 123345017377. The reversal of 123345017372 is 273710543321.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123345017377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1207598 + ... + 1305749.

It is an arithmetic number, because the mean of its divisors is an integer number (17989288310).

Almost surely, 2^123345017372 is an apocalyptic number.

It is an amenable number.

123345017372 is a deficient number, since it is larger than the sum of its proper divisors (92526442348).

123345017372 is a wasteful number, since it uses less digits than its factorization.

123345017372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2525620 (or 2525618 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 38.

The spelling of 123345017372 in words is "one hundred twenty-three billion, three hundred forty-five million, seventeen thousand, three hundred seventy-two".