123161415456255 has 48 divisors (see below), whose sum is σ = 216618126355680. Its totient is φ = 59709968398080.

The previous prime is 123161415456179. The next prime is 123161415456319. The reversal of 123161415456255 is 552654514161321.

It is not a de Polignac number, because 123161415456255 - 2⁷ = 123161415456127 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123161415456198 and 123161415456207.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20688441 + ... + 25967949.

It is an arithmetic number, because the mean of its divisors is an integer number (4512877632410).

Almost surely, 2^{123161415456255} is an apocalyptic number.

123161415456255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

123161415456255 is a deficient number, since it is larger than the sum of its proper divisors (93456710899425).

123161415456255 is a wasteful number, since it uses less digits than its factorization.

123161415456255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5292392 (or 5292381 counting only the distinct ones).

The product of its digits is 4320000, while the sum is 51.

The spelling of 123161415456255 in words is "one hundred twenty-three trillion, one hundred sixty-one billion, four hundred fifteen million, four hundred fifty-six thousand, two hundred fifty-five".