123256715071126 has 16 divisors (see below), whose sum is σ = 227550858593184. Its totient is φ = 48760898269824.

The previous prime is 123256715071123. The next prime is 123256715071199. The reversal of 123256715071126 is 621170517652321.

It is a self number, because there is not a number n which added to its sum of digits gives 123256715071126.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123256715071123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 338617348915 + ... + 338617349278.

It is an arithmetic number, because the mean of its divisors is an integer number (14221928662074).

Almost surely, 2^{123256715071126} is an apocalyptic number.

123256715071126 is a deficient number, since it is larger than the sum of its proper divisors (104294143522058).

123256715071126 is a wasteful number, since it uses less digits than its factorization.

123256715071126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677234698215.

The product of its (nonzero) digits is 1058400, while the sum is 49.

The spelling of 123256715071126 in words is "one hundred twenty-three trillion, two hundred fifty-six billion, seven hundred fifteen million, seventy-one thousand, one hundred twenty-six".