123406667945 has 16 divisors (see below), whose sum is σ = 162712791360. Its totient is φ = 89104612800.

The previous prime is 123406667929. The next prime is 123406667957. The reversal of 123406667945 is 549766604321.

It is not a de Polignac number, because 123406667945 - 2⁴ = 123406667929 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8063426 + ... + 8078715.

It is an arithmetic number, because the mean of its divisors is an integer number (10169549460).

Almost surely, 2^123406667945 is an apocalyptic number.

It is an amenable number.

123406667945 is a deficient number, since it is larger than the sum of its proper divisors (39306123415).

123406667945 is a wasteful number, since it uses less digits than its factorization.

123406667945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16142296.

The product of its (nonzero) digits is 6531840, while the sum is 53.

The spelling of 123406667945 in words is "one hundred twenty-three billion, four hundred six million, six hundred sixty-seven thousand, nine hundred forty-five".