669058999056 has 160 divisors (see below), whose sum is σ = 2197021286400. Its totient is φ = 190965962880.

The previous prime is 669058999033. The next prime is 669058999069. The reversal of 669058999056 is 650999850966.

It is a super-2 number, since 2×669058999056² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2885155 + ... + 3108413.

It is an arithmetic number, because the mean of its divisors is an integer number (13731383040).

Almost surely, 2^669058999056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 669058999056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1098510643200).

669058999056 is an abundant number, since it is smaller than the sum of its proper divisors (1527962287344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

669058999056 is a wasteful number, since it uses less digits than its factorization.

669058999056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224274 (or 224262 counting only the distinct ones).

The product of its (nonzero) digits is 283435200, while the sum is 72.

The spelling of 669058999056 in words is "six hundred sixty-nine billion, fifty-eight million, nine hundred ninety-nine thousand, fifty-six".