123530305455 has 12 divisors (see below), whose sum is σ = 214119196200. Its totient is φ = 65882829552.

The previous prime is 123530305429. The next prime is 123530305543. The reversal of 123530305455 is 554503035321.

123530305455 is a `hidden beast` number, since 1 + 23 + 530 + 3 + 0 + 54 + 55 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-123530305455 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1372558905 + ... + 1372558994.

It is an arithmetic number, because the mean of its divisors is an integer number (17843266350).

Almost surely, 2^123530305455 is an apocalyptic number.

123530305455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

123530305455 is a deficient number, since it is larger than the sum of its proper divisors (90588890745).

123530305455 is a wasteful number, since it uses less digits than its factorization.

123530305455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2745117910 (or 2745117907 counting only the distinct ones).

The product of its (nonzero) digits is 135000, while the sum is 36.

The spelling of 123530305455 in words is "one hundred twenty-three billion, five hundred thirty million, three hundred five thousand, four hundred fifty-five".