669481082964719 has 8 divisors (see below), whose sum is σ = 677976902041920. Its totient is φ = 660985798262400.

The previous prime is 669481082964709. The next prime is 669481082964731. The reversal of 669481082964719 is 917469280184966.

It is a happy number.

669481082964719 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 669481082964719 - 2¹⁶ = 669481082899183 is a prime.

It is a super-2 number, since 2×669481082964719² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669481082964709) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131071862 + ... + 136083779.

It is an arithmetic number, because the mean of its divisors is an integer number (84747112755240).

Almost surely, 2^{669481082964719} is an apocalyptic number.

669481082964719 is a deficient number, since it is larger than the sum of its proper divisors (8495819077201).

669481082964719 is a wasteful number, since it uses less digits than its factorization.

669481082964719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267187441.

The product of its (nonzero) digits is 2257403904, while the sum is 80.

The spelling of 669481082964719 in words is "six hundred sixty-nine trillion, four hundred eighty-one billion, eighty-two million, nine hundred sixty-four thousand, seven hundred nineteen".