669984341078 has 32 divisors (see below), whose sum is σ = 1126759874016. Its totient is φ = 296744663808.

The previous prime is 669984341071. The next prime is 669984341101. The reversal of 669984341078 is 870143489966.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669984341071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4699976 + ... + 4840427.

It is an arithmetic number, because the mean of its divisors is an integer number (35211246063).

Almost surely, 2^669984341078 is an apocalyptic number.

669984341078 is a deficient number, since it is larger than the sum of its proper divisors (456775532938).

669984341078 is a wasteful number, since it uses less digits than its factorization.

669984341078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9540528.

The product of its (nonzero) digits is 62705664, while the sum is 65.

The spelling of 669984341078 in words is "six hundred sixty-nine billion, nine hundred eighty-four million, three hundred forty-one thousand, seventy-eight".