123528951859 has 2 divisors, whose sum is σ = 123528951860. Its totient is φ = 123528951858.

The previous prime is 123528951817. The next prime is 123528951913. The reversal of 123528951859 is 958159825321.

It is a weak prime.

It is an emirp because it is prime and its reverse (958159825321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123528951859 - 2⁹ = 123528951347 is a prime.

It is not a weakly prime, because it can be changed into another prime (123528951059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61764475929 + 61764475930.

It is an arithmetic number, because the mean of its divisors is an integer number (61764475930).

Almost surely, 2^123528951859 is an apocalyptic number.

123528951859 is a deficient number, since it is larger than the sum of its proper divisors (1).

123528951859 is an equidigital number, since it uses as much as digits as its factorization.

123528951859 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776000, while the sum is 58.

The spelling of 123528951859 in words is "one hundred twenty-three billion, five hundred twenty-eight million, nine hundred fifty-one thousand, eight hundred fifty-nine".