669080518751 has 16 divisors (see below), whose sum is σ = 702909598464. Its totient is φ = 635660703744.

The previous prime is 669080518739. The next prime is 669080518787. The reversal of 669080518751 is 157815080966.

It is a cyclic number.

It is not a de Polignac number, because 669080518751 - 2²⁶ = 669013409887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669080518721) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1888016 + ... + 2214218.

It is an arithmetic number, because the mean of its divisors is an integer number (43931849904).

Almost surely, 2^669080518751 is an apocalyptic number.

669080518751 is a deficient number, since it is larger than the sum of its proper divisors (33829079713).

669080518751 is a wasteful number, since it uses less digits than its factorization.

669080518751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326830.

The product of its (nonzero) digits is 3628800, while the sum is 56.

The spelling of 669080518751 in words is "six hundred sixty-nine billion, eighty million, five hundred eighteen thousand, seven hundred fifty-one".