123011505044535 has 48 divisors (see below), whose sum is σ = 200081723637600. Its totient is φ = 64535762674944.

The previous prime is 123011505044531. The next prime is 123011505044569. The reversal of 123011505044535 is 535440505110321.

It is not a de Polignac number, because 123011505044535 - 2² = 123011505044531 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123011505044493 and 123011505044502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123011505044531) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 46452181 + ... + 49028849.

It is an arithmetic number, because the mean of its divisors is an integer number (4168369242450).

Almost surely, 2^{123011505044535} is an apocalyptic number.

123011505044535 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

123011505044535 is a deficient number, since it is larger than the sum of its proper divisors (77070218593065).

123011505044535 is an equidigital number, since it uses as much as digits as its factorization.

123011505044535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2577520 (or 2577453 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 39.

The spelling of 123011505044535 in words is "one hundred twenty-three trillion, eleven billion, five hundred five million, forty-four thousand, five hundred thirty-five".