668055365145 has 96 divisors (see below), whose sum is σ = 1342987776000. Its totient is φ = 300879411840.

The previous prime is 668055365111. The next prime is 668055365147. The reversal of 668055365145 is 541563550866.

668055365145 is a `hidden beast` number, since 6 + 6 + 80 + 553 + 6 + 5 + 1 + 4 + 5 = 666.

It is not a de Polignac number, because 668055365145 - 2¹⁰ = 668055364121 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 668055365091 and 668055365100.

It is not an unprimeable number, because it can be changed into a prime (668055365147) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 33515172 + ... + 33535098.

It is an arithmetic number, because the mean of its divisors is an integer number (13989456000).

Almost surely, 2^668055365145 is an apocalyptic number.

It is an amenable number.

668055365145 is an abundant number, since it is smaller than the sum of its proper divisors (674932410855).

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

668055365145 is a wasteful number, since it uses less digits than its factorization.

668055365145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21515 (or 21512 counting only the distinct ones).

The product of its (nonzero) digits is 12960000, while the sum is 54.

The spelling of 668055365145 in words is "six hundred sixty-eight billion, fifty-five million, three hundred sixty-five thousand, one hundred forty-five".