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128426148219 = 3177135467039
BaseRepresentation
bin111011110011011001…
…0111000000101111011
3110021111020110021212010
41313212302320011323
54101004043220334
6134555334021003
712164343151125
oct1674662700573
9407436407763
10128426148219
114a513237a86
1220a817a7763
13c158ac57a5
146304460215
153519acc0e9
hex1de6cb817b

128426148219 has 16 divisors (see below), whose sum is σ = 183861135360. Its totient is φ = 79446165120.

The previous prime is 128426148197. The next prime is 128426148247. The reversal of 128426148219 is 912841624821.

It is not a de Polignac number, because 128426148219 - 28 = 128426147963 is a prime.

It is a super-2 number, since 2×1284261482192 (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (128426148289) 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, 17729899 + ... + 17737140.

It is an arithmetic number, because the mean of its divisors is an integer number (11491320960).

Almost surely, 2128426148219 is an apocalyptic number.

128426148219 is a deficient number, since it is larger than the sum of its proper divisors (55434987141).

128426148219 is a wasteful number, since it uses less digits than its factorization.

128426148219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35467130.

The product of its digits is 442368, while the sum is 48.

The spelling of 128426148219 in words is "one hundred twenty-eight billion, four hundred twenty-six million, one hundred forty-eight thousand, two hundred nineteen".

Divisors: 1 3 17 51 71 213 1207 3621 35467039 106401117 602939663 1808818989 2518159769 7554479307 42808716073 128426148219