666465890342 has 16 divisors (see below), whose sum is σ = 1142524157472. Its totient is φ = 285625438080.

The previous prime is 666465890339. The next prime is 666465890353. The reversal of 666465890342 is 243098564666.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 1949342 + ... + 2265582.

It is an arithmetic number, because the mean of its divisors is an integer number (71407759842).

Almost surely, 2^666465890342 is an apocalyptic number.

666465890342 is a deficient number, since it is larger than the sum of its proper divisors (476058267130).

666465890342 is a wasteful number, since it uses less digits than its factorization.

666465890342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466783.

The product of its (nonzero) digits is 44789760, while the sum is 59.

The spelling of 666465890342 in words is "six hundred sixty-six billion, four hundred sixty-five million, eight hundred ninety thousand, three hundred forty-two".