123815854073 has 2 divisors, whose sum is σ = 123815854074. Its totient is φ = 123815854072.

The previous prime is 123815854067. The next prime is 123815854109. The reversal of 123815854073 is 370458518321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122250227449 + 1565626624 = 349643^2 + 39568^2 .

It is a cyclic number.

It is not a de Polignac number, because 123815854073 - 2⁶ = 123815854009 is a prime.

It is not a weakly prime, because it can be changed into another prime (123815854373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61907927036 + 61907927037.

It is an arithmetic number, because the mean of its divisors is an integer number (61907927037).

Almost surely, 2^123815854073 is an apocalyptic number.

It is an amenable number.

123815854073 is a deficient number, since it is larger than the sum of its proper divisors (1).

123815854073 is an equidigital number, since it uses as much as digits as its factorization.

123815854073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 806400, while the sum is 47.

The spelling of 123815854073 in words is "one hundred twenty-three billion, eight hundred fifteen million, eight hundred fifty-four thousand, seventy-three".