123265135011 has 16 divisors (see below), whose sum is σ = 165219622400. Its totient is φ = 81743904000.

The previous prime is 123265134997. The next prime is 123265135057. The reversal of 123265135011 is 110531562321.

It is a de Polignac number, because none of the positive numbers 2^k-123265135011 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123265135011.

It is not an unprimeable number, because it can be changed into a prime (123265130011) by changing a digit.

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, 2671386 + ... + 2717136.

It is an arithmetic number, because the mean of its divisors is an integer number (10326226400).

Almost surely, 2^123265135011 is an apocalyptic number.

123265135011 is a deficient number, since it is larger than the sum of its proper divisors (41954487389).

123265135011 is a wasteful number, since it uses less digits than its factorization.

123265135011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50466.

The product of its (nonzero) digits is 5400, while the sum is 30.

Adding to 123265135011 its reverse (110531562321), we get a palindrome (233796697332).

The spelling of 123265135011 in words is "one hundred twenty-three billion, two hundred sixty-five million, one hundred thirty-five thousand, eleven".