123123115945 has 8 divisors (see below), whose sum is σ = 149617964160. Its totient is φ = 97251676080.

The previous prime is 123123115937. The next prime is 123123115987. The reversal of 123123115945 is 549511321321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 123123115945 - 2³ = 123123115937 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155851651 + ... + 155852440.

It is an arithmetic number, because the mean of its divisors is an integer number (18702245520).

Almost surely, 2^123123115945 is an apocalyptic number.

It is an amenable number.

123123115945 is a deficient number, since it is larger than the sum of its proper divisors (26494848215).

123123115945 is an equidigital number, since it uses as much as digits as its factorization.

123123115945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311704175.

The product of its digits is 32400, while the sum is 37.

The spelling of 123123115945 in words is "one hundred twenty-three billion, one hundred twenty-three million, one hundred fifteen thousand, nine hundred forty-five".