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768490924991 = 19397173358789
BaseRepresentation
bin10110010111011011010…
…00001110101110111111
32201110121110020212212112
423023231220032232333
5100042332134044431
61345012335324235
7106343631040406
oct13135550165677
92643543225775
10768490924991
11276a08102339
12104b3208067b
13576120657aa
14292a373463d
1514ecbe79c2b
hexb2eda0ebbf

768490924991 has 16 divisors (see below), whose sum is σ = 811457205600. Its totient is φ = 725778776448.

The previous prime is 768490924951. The next prime is 768490925003. The reversal of 768490924991 is 199429094867.

It is a cyclic number.

It is not a de Polignac number, because 768490924991 - 214 = 768490908607 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 (768490924951) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13042625 + ... + 13101413.

It is an arithmetic number, because the mean of its divisors is an integer number (50716075350).

Almost surely, 2768490924991 is an apocalyptic number.

768490924991 is a deficient number, since it is larger than the sum of its proper divisors (42966280609).

768490924991 is a wasteful number, since it uses less digits than its factorization.

768490924991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60938.

The product of its (nonzero) digits is 70543872, while the sum is 68.

The spelling of 768490924991 in words is "seven hundred sixty-eight billion, four hundred ninety million, nine hundred twenty-four thousand, nine hundred ninety-one".

Divisors: 1 19 397 1733 7543 32927 58789 688001 1116991 13072019 23339233 101881337 443445427 1935745403 40446890789 768490924991