123551090479 has 2 divisors, whose sum is σ = 123551090480. Its totient is φ = 123551090478.

The previous prime is 123551090477. The next prime is 123551090483. The reversal of 123551090479 is 974090155321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123551090479 - 2¹ = 123551090477 is a prime.

Together with 123551090477, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123551090477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61775545239 + 61775545240.

It is an arithmetic number, because the mean of its divisors is an integer number (61775545240).

Almost surely, 2^123551090479 is an apocalyptic number.

123551090479 is a deficient number, since it is larger than the sum of its proper divisors (1).

123551090479 is an equidigital number, since it uses as much as digits as its factorization.

123551090479 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 340200, while the sum is 46.

The spelling of 123551090479 in words is "one hundred twenty-three billion, five hundred fifty-one million, ninety thousand, four hundred seventy-nine".