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550917930881 = 1987631143933
BaseRepresentation
bin10000000010001010100…
…01000111111110000001
31221200000102021121022102
420001011101013332001
533011234442242011
61101031015120145
754542155101413
oct10010521077601
91850012247272
10550917930881
111a270889a60a
128a931373055
133cc4a121866
141c94381a9b3
15e4e5d9773b
hex8045447f81

550917930881 has 8 divisors (see below), whose sum is σ = 551295079104. Its totient is φ = 550540887120.

The previous prime is 550917930793. The next prime is 550917930907. The reversal of 550917930881 is 188039719055.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 550917930881 - 214 = 550917914497 is a prime.

It is a super-2 number, since 2×5509179308812 (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (550917930281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12517991 + ... + 12561923.

It is an arithmetic number, because the mean of its divisors is an integer number (68911884888).

Almost surely, 2550917930881 is an apocalyptic number.

It is an amenable number.

550917930881 is a deficient number, since it is larger than the sum of its proper divisors (377148223).

550917930881 is a wasteful number, since it uses less digits than its factorization.

550917930881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52231.

The product of its (nonzero) digits is 2721600, while the sum is 56.

The spelling of 550917930881 in words is "five hundred fifty billion, nine hundred seventeen million, nine hundred thirty thousand, eight hundred eighty-one".

Divisors: 1 1987 6311 43933 12539957 87294871 277261163 550917930881