669120516211 has 48 divisors (see below), whose sum is σ = 841364928000. Its totient is φ = 530893051920.

The previous prime is 669120516209. The next prime is 669120516217. The reversal of 669120516211 is 112615021966.

It is a happy number.

669120516211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 669120516211 - 2¹ = 669120516209 is a prime.

It is a super-2 number, since 2×669120516211² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (669120516217) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7537200 + ... + 7625458.

It is an arithmetic number, because the mean of its divisors is an integer number (17528436000).

Almost surely, 2^669120516211 is an apocalyptic number.

669120516211 is a deficient number, since it is larger than the sum of its proper divisors (172244411789).

669120516211 is an equidigital number, since it uses as much as digits as its factorization.

669120516211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88365 (or 88320 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 40.

The spelling of 669120516211 in words is "six hundred sixty-nine billion, one hundred twenty million, five hundred sixteen thousand, two hundred eleven".