123243353520535 has 16 divisors (see below), whose sum is σ = 148545514992096. Its totient is φ = 98159033909248.

The previous prime is 123243353520499. The next prime is 123243353520577. The reversal of 123243353520535 is 535025353342321.

It is a cyclic number.

It is not a de Polignac number, because 123243353520535 - 2³⁷ = 123105914567063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89198487 + ... + 90569623.

It is an arithmetic number, because the mean of its divisors is an integer number (9284094687006).

Almost surely, 2^{123243353520535} is an apocalyptic number.

123243353520535 is a deficient number, since it is larger than the sum of its proper divisors (25302161471561).

123243353520535 is a wasteful number, since it uses less digits than its factorization.

123243353520535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1450562.

The product of its (nonzero) digits is 4860000, while the sum is 46.

The spelling of 123243353520535 in words is "one hundred twenty-three trillion, two hundred forty-three billion, three hundred fifty-three million, five hundred twenty thousand, five hundred thirty-five".