668265366770 has 16 divisors (see below), whose sum is σ = 1206018339840. Its totient is φ = 266608217904.

The previous prime is 668265366757. The next prime is 668265366787. The reversal of 668265366770 is 77663562866.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87237080 + ... + 87244739.

It is an arithmetic number, because the mean of its divisors is an integer number (75376146240).

Almost surely, 2^668265366770 is an apocalyptic number.

668265366770 is a deficient number, since it is larger than the sum of its proper divisors (537752973070).

668265366770 is a wasteful number, since it uses less digits than its factorization.

668265366770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174482209.

The product of its (nonzero) digits is 91445760, while the sum is 62.

The spelling of 668265366770 in words is "six hundred sixty-eight billion, two hundred sixty-five million, three hundred sixty-six thousand, seven hundred seventy".