123405545204235 has 80 divisors (see below), whose sum is σ = 253495931595456. Its totient is φ = 56262719169792.

The previous prime is 123405545204233. The next prime is 123405545204237. The reversal of 123405545204235 is 532402545504321.

123405545204235 is a `hidden beast` number, since 1 + 2 + 3 + 4 + 0 + 5 + 54 + 520 + 42 + 35 = 666.

It is an interprime number because it is at equal distance from previous prime (123405545204233) and next prime (123405545204237).

It is not a de Polignac number, because 123405545204235 - 2¹ = 123405545204233 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (123405545204231) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 57292804 + ... + 59407713.

Almost surely, 2^{123405545204235} is an apocalyptic number.

123405545204235 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

123405545204235 is an abundant number, since it is smaller than the sum of its proper divisors (130090386391221).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123405545204235 is a wasteful number, since it uses less digits than its factorization.

123405545204235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116700914 (or 116700905 counting only the distinct ones).

The product of its (nonzero) digits is 2880000, while the sum is 45.

The spelling of 123405545204235 in words is "one hundred twenty-three trillion, four hundred five billion, five hundred forty-five million, two hundred four thousand, two hundred thirty-five".