135154566100123 has 2 divisors, whose sum is σ = 135154566100124. Its totient is φ = 135154566100122.

The previous prime is 135154566100121. The next prime is 135154566100189. The reversal of 135154566100123 is 321001665451531.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 135154566100123 - 2¹ = 135154566100121 is a prime.

Together with 135154566100121, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 135154566100123.

It is not a weakly prime, because it can be changed into another prime (135154566100121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67577283050061 + 67577283050062.

It is an arithmetic number, because the mean of its divisors is an integer number (67577283050062).

Almost surely, 2^{135154566100123} is an apocalyptic number.

135154566100123 is a deficient number, since it is larger than the sum of its proper divisors (1).

135154566100123 is an equidigital number, since it uses as much as digits as its factorization.

135154566100123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324000, while the sum is 43.

The spelling of 135154566100123 in words is "one hundred thirty-five trillion, one hundred fifty-four billion, five hundred sixty-six million, one hundred thousand, one hundred twenty-three".