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9963438081 = 3171631198537
BaseRepresentation
bin10010100011101111…
…00000000000000001
3221201100222002121020
421101313200000001
5130401120004311
64324355020053
7501621553302
oct112167400001
927640862536
109963438081
114253112553
121b2089a629
13c2a2587bc
146a73667a9
153d4a89c06
hex251de0001

9963438081 has 16 divisors (see below), whose sum is σ = 14152336704. Its totient is φ = 6213210624.

The previous prime is 9963438071. The next prime is 9963438083. The reversal of 9963438081 is 1808343699.

It is not a de Polignac number, because 9963438081 - 215 = 9963405313 is a prime.

It is a super-2 number, since 2×99634380812 (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (9963438083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 590956 + ... + 607581.

It is an arithmetic number, because the mean of its divisors is an integer number (884521044).

It is a Proth number, since it is equal to 76015 ⋅ 217 + 1 and 76015 < 217.

Almost surely, 29963438081 is an apocalyptic number.

It is an amenable number.

9963438081 is a deficient number, since it is larger than the sum of its proper divisors (4188898623).

9963438081 is a wasteful number, since it uses less digits than its factorization.

9963438081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1198720.

The product of its (nonzero) digits is 1119744, while the sum is 51.

The square root of 9963438081 is about 99817.0230020912. The cubic root of 9963438081 is about 2151.8058079706.

The spelling of 9963438081 in words is "nine billion, nine hundred sixty-three million, four hundred thirty-eight thousand, eighty-one".

Divisors: 1 3 17 51 163 489 2771 8313 1198537 3595611 20375129 61125387 195361531 586084593 3321146027 9963438081