123293916855 has 32 divisors (see below), whose sum is σ = 219400396800. Its totient is φ = 65693392416.

The previous prime is 123293916853. The next prime is 123293916859. The reversal of 123293916855 is 558619392321.

123293916855 is a `hidden beast` number, since 123 + 29 + 391 + 68 + 55 = 666.

It is not a de Polignac number, because 123293916855 - 2¹ = 123293916853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123293916853) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 299239 + ... + 579768.

It is an arithmetic number, because the mean of its divisors is an integer number (6856262400).

Almost surely, 2^123293916855 is an apocalyptic number.

123293916855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

123293916855 is a deficient number, since it is larger than the sum of its proper divisors (96106479945).

123293916855 is a wasteful number, since it uses less digits than its factorization.

123293916855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880060 (or 880054 counting only the distinct ones).

The product of its digits is 3499200, while the sum is 54.

The spelling of 123293916855 in words is "one hundred twenty-three billion, two hundred ninety-three million, nine hundred sixteen thousand, eight hundred fifty-five".