123557434504 has 48 divisors (see below), whose sum is σ = 269741843280. Its totient is φ = 52904466720.

The previous prime is 123557434501. The next prime is 123557434537. The reversal of 123557434504 is 405434755321.

It is not an unprimeable number, because it can be changed into a prime (123557434501) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 283219 + ... + 572125.

It is an arithmetic number, because the mean of its divisors is an integer number (5619621735).

Almost surely, 2^123557434504 is an apocalyptic number.

123557434504 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

123557434504 is an abundant number, since it is smaller than the sum of its proper divisors (146184408776).

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

123557434504 is a wasteful number, since it uses less digits than its factorization.

123557434504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290018 (or 290007 counting only the distinct ones).

The product of its (nonzero) digits is 1008000, while the sum is 43.

The spelling of 123557434504 in words is "one hundred twenty-three billion, five hundred fifty-seven million, four hundred thirty-four thousand, five hundred four".