123006373866 has 24 divisors (see below), whose sum is σ = 267091949124. Its totient is φ = 40913180160.

The previous prime is 123006373837. The next prime is 123006373883. The reversal of 123006373866 is 668373600321.

123006373866 is a `hidden beast` number, since 1 + 2 + 3 + 0 + 0 + 637 + 3 + 8 + 6 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 118832567841 + 4173806025 = 344721^2 + 64605^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7403511 + ... + 7420106.

Almost surely, 2^123006373866 is an apocalyptic number.

123006373866 is an abundant number, since it is smaller than the sum of its proper divisors (144085575258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123006373866 is a wasteful number, since it uses less digits than its factorization.

123006373866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14824086 (or 14824083 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 45.

The spelling of 123006373866 in words is "one hundred twenty-three billion, six million, three hundred seventy-three thousand, eight hundred sixty-six".