123255441015504 has 80 divisors (see below), whose sum is σ = 363955069610880. Its totient is φ = 35210222231040.

The previous prime is 123255441015463. The next prime is 123255441015517. The reversal of 123255441015504 is 405510144552321.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

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, 27151207 + ... + 31363974.

It is an arithmetic number, because the mean of its divisors is an integer number (4549438370136).

Almost surely, 2^{123255441015504} is an apocalyptic number.

123255441015504 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

123255441015504 is an abundant number, since it is smaller than the sum of its proper divisors (240699628595376).

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

123255441015504 is a wasteful number, since it uses less digits than its factorization.

123255441015504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58521468 (or 58521462 counting only the distinct ones).

The product of its (nonzero) digits is 480000, while the sum is 42.

Adding to 123255441015504 its reverse (405510144552321), we get a palindrome (528765585567825).

The spelling of 123255441015504 in words is "one hundred twenty-three trillion, two hundred fifty-five billion, four hundred forty-one million, fifteen thousand, five hundred four".