123645434395 has 32 divisors (see below), whose sum is σ = 170910622080. Its totient is φ = 84118210560.

The previous prime is 123645434387. The next prime is 123645434447. The reversal of 123645434395 is 593434546321.

It is not a de Polignac number, because 123645434395 - 2³ = 123645434387 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2241769 + ... + 2296261.

It is an arithmetic number, because the mean of its divisors is an integer number (5340956940).

Almost surely, 2^123645434395 is an apocalyptic number.

123645434395 is a deficient number, since it is larger than the sum of its proper divisors (47265187685).

123645434395 is a wasteful number, since it uses less digits than its factorization.

123645434395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55015.

The product of its digits is 4665600, while the sum is 49.

The spelling of 123645434395 in words is "one hundred twenty-three billion, six hundred forty-five million, four hundred thirty-four thousand, three hundred ninety-five".