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1668686703654 = 232673710401857
BaseRepresentation
bin11000010010000101011…
…110100110110000100110
312220112011122102112221110
4120102011132212300212
5204314432244004104
63314330055125450
7231362416644255
oct30220536466046
95815148375843
101668686703654
11593760161583
1222b49b973886
13c148325b659
145aa9cb2079c
152d616779e89
hex184857a6c26

1668686703654 has 16 divisors (see below), whose sum is σ = 3337498550448. Its totient is φ = 556208044032.

The previous prime is 1668686703637. The next prime is 1668686703667. The reversal of 1668686703654 is 4563076868661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5040507 + ... + 5361350.

It is an arithmetic number, because the mean of its divisors is an integer number (208593659403).

Almost surely, 21668686703654 is an apocalyptic number.

1668686703654 is an abundant number, since it is smaller than the sum of its proper divisors (1668811846794).

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

1668686703654 is a wasteful number, since it uses less digits than its factorization.

1668686703654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10428599.

The product of its (nonzero) digits is 209018880, while the sum is 66.

The spelling of 1668686703654 in words is "one trillion, six hundred sixty-eight billion, six hundred eighty-six million, seven hundred three thousand, six hundred fifty-four".

Divisors: 1 2 3 6 26737 53474 80211 160422 10401857 20803714 31205571 62411142 278114450609 556228901218 834343351827 1668686703654