123584485501639 has 2 divisors, whose sum is σ = 123584485501640. Its totient is φ = 123584485501638.

The previous prime is 123584485501619. The next prime is 123584485501667. The reversal of 123584485501639 is 936105584485321.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (936105584485321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123584485501639 - 2³⁷ = 123447046548167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123584485501619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61792242750819 + 61792242750820.

It is an arithmetic number, because the mean of its divisors is an integer number (61792242750820).

Almost surely, 2^{123584485501639} is an apocalyptic number.

123584485501639 is a deficient number, since it is larger than the sum of its proper divisors (1).

123584485501639 is an equidigital number, since it uses as much as digits as its factorization.

123584485501639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 124416000, while the sum is 64.

The spelling of 123584485501639 in words is "one hundred twenty-three trillion, five hundred eighty-four billion, four hundred eighty-five million, five hundred one thousand, six hundred thirty-nine".