15825811108123 has 2 divisors, whose sum is σ = 15825811108124. Its totient is φ = 15825811108122.

The previous prime is 15825811108097. The next prime is 15825811108127. The reversal of 15825811108123 is 32180111852851.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15825811108123 is a prime.

It is not a weakly prime, because it can be changed into another prime (15825811108127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7912905554061 + 7912905554062.

It is an arithmetic number, because the mean of its divisors is an integer number (7912905554062).

Almost surely, 2^{15825811108123} is an apocalyptic number.

15825811108123 is a deficient number, since it is larger than the sum of its proper divisors (1).

15825811108123 is an equidigital number, since it uses as much as digits as its factorization.

15825811108123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 153600, while the sum is 46.

The spelling of 15825811108123 in words is "fifteen trillion, eight hundred twenty-five billion, eight hundred eleven million, one hundred eight thousand, one hundred twenty-three".