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83999956992 = 213371931829
BaseRepresentation
bin100111000111011001…
…0011010000000000000
322000211002201221110020
41032032302122000000
52334012442110432
6102331122333440
76032411565540
oct1161662320000
9260732657406
1083999956992
1132695870a66
12143434ba280
137bc8a3ca83
1440cc0bb320
1522b973622c
hex138ec9a000

83999956992 has 448 divisors, whose sum is σ = 278484787200. Its totient is φ = 21976842240.

The previous prime is 83999956991. The next prime is 83999957009. The reversal of 83999956992 is 29965999938.

It is a tau number, because it is divible by the number of its divisors (448).

It is not an unprimeable number, because it can be changed into a prime (83999956991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 101326434 + ... + 101327262.

Almost surely, 283999956992 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 83999956992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139242393600).

83999956992 is an abundant number, since it is smaller than the sum of its proper divisors (194484830208).

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

83999956992 is a wasteful number, since it uses less digits than its factorization.

83999956992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 915 (or 891 counting only the distinct ones).

The product of its digits is 765275040, while the sum is 78.

The spelling of 83999956992 in words is "eighty-three billion, nine hundred ninety-nine million, nine hundred fifty-six thousand, nine hundred ninety-two".