123536542345 has 8 divisors (see below), whose sum is σ = 154689235776. Its totient is φ = 94532310576.

The previous prime is 123536542331. The next prime is 123536542357. The reversal of 123536542345 is 543245635321.

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

It is a cyclic number.

It is not a de Polignac number, because 123536542345 - 2¹⁹ = 123536018057 is a prime.

It is a super-2 number, since 2×123536542345² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

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, 537115287 + ... + 537115516.

It is an arithmetic number, because the mean of its divisors is an integer number (19336154472).

Almost surely, 2^123536542345 is an apocalyptic number.

It is an amenable number.

123536542345 is a deficient number, since it is larger than the sum of its proper divisors (31152693431).

123536542345 is a wasteful number, since it uses less digits than its factorization.

123536542345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1074230831.

The product of its digits is 1296000, while the sum is 43.

The spelling of 123536542345 in words is "one hundred twenty-three billion, five hundred thirty-six million, five hundred forty-two thousand, three hundred forty-five".