123405715007 has 16 divisors (see below), whose sum is σ = 131828532000. Its totient is φ = 115311579264.

The previous prime is 123405715003. The next prime is 123405715039. The reversal of 123405715007 is 700517504321.

It is a cyclic number.

It is not a de Polignac number, because 123405715007 - 2² = 123405715003 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123405715003) 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 15 ways as a sum of consecutive naturals, for example, 318032 + ... + 589877.

It is an arithmetic number, because the mean of its divisors is an integer number (8239283250).

Almost surely, 2^123405715007 is an apocalyptic number.

123405715007 is a deficient number, since it is larger than the sum of its proper divisors (8422816993).

123405715007 is a wasteful number, since it uses less digits than its factorization.

123405715007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 908090.

The product of its (nonzero) digits is 29400, while the sum is 35.

The spelling of 123405715007 in words is "one hundred twenty-three billion, four hundred five million, seven hundred fifteen thousand, seven".