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10381217889 = 37966151169
BaseRepresentation
bin10011010101100010…
…01101000001100001
3222210111002111202110
421222301031001201
5132230042433024
64434041305533
7515153616240
oct115261150141
928714074673
1010381217889
114447a21719
1220187952a9
13c95983aa3
14706a38957
1540b5b1629
hex26ac4d061

10381217889 has 16 divisors (see below), whose sum is σ = 15820945280. Its totient is φ = 5931394560.

The previous prime is 10381217887. The next prime is 10381217893. The reversal of 10381217889 is 98871218301.

It is a happy number.

It is not a de Polignac number, because 10381217889 - 21 = 10381217887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10381217887) 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, 177297 + ... + 228465.

It is an arithmetic number, because the mean of its divisors is an integer number (988809080).

Almost surely, 210381217889 is an apocalyptic number.

It is an amenable number.

10381217889 is a deficient number, since it is larger than the sum of its proper divisors (5439727391).

10381217889 is an equidigital number, since it uses as much as digits as its factorization.

10381217889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60840.

The product of its (nonzero) digits is 193536, while the sum is 48.

The spelling of 10381217889 in words is "ten billion, three hundred eighty-one million, two hundred seventeen thousand, eight hundred eighty-nine".

Divisors: 1 3 7 21 9661 28983 51169 67627 153507 202881 358183 1074549 494343709 1483031127 3460405963 10381217889