123287115955 has 16 divisors (see below), whose sum is σ = 152127849024. Its totient is φ = 95847304320.

The previous prime is 123287115871. The next prime is 123287115977. The reversal of 123287115955 is 559511782321.

It is not a de Polignac number, because 123287115955 - 2⁷ = 123287115827 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123287115899 and 123287115908.

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, 252616 + ... + 557125.

It is an arithmetic number, because the mean of its divisors is an integer number (9507990564).

Almost surely, 2^123287115955 is an apocalyptic number.

123287115955 is a deficient number, since it is larger than the sum of its proper divisors (28840733069).

123287115955 is an equidigital number, since it uses as much as digits as its factorization.

123287115955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810606.

The product of its digits is 756000, while the sum is 49.

The spelling of 123287115955 in words is "one hundred twenty-three billion, two hundred eighty-seven million, one hundred fifteen thousand, nine hundred fifty-five".