123530432045551 has 2 divisors, whose sum is σ = 123530432045552. Its totient is φ = 123530432045550.

The previous prime is 123530432045513. The next prime is 123530432045557. The reversal of 123530432045551 is 155540234035321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123530432045551 - 2²¹ = 123530429948399 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123530432045498 and 123530432045507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123530432045557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61765216022775 + 61765216022776.

It is an arithmetic number, because the mean of its divisors is an integer number (61765216022776).

Almost surely, 2^{123530432045551} is an apocalyptic number.

123530432045551 is a deficient number, since it is larger than the sum of its proper divisors (1).

123530432045551 is an equidigital number, since it uses as much as digits as its factorization.

123530432045551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080000, while the sum is 43.

The spelling of 123530432045551 in words is "one hundred twenty-three trillion, five hundred thirty billion, four hundred thirty-two million, forty-five thousand, five hundred fifty-one".